![](data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 72 71" width="72"></svg>)
A job was originally planned to be completed in 8 days, but actually it was completed in 5 days. How much is the working time shortened? How much is the work efficiency increased?
Reduced working hours:
（10-8）÷10=1/5
work efficiency:
It was originally completed in 10 days, one tenth of every day,
The actual completion time is 8 days, 1 / 8 of every day
Improved: (1 / 8-1 / 10) △ 1 / 10 = 1 / 4
That is to say, the work efficiency is 1 / 4 higher than the plan
The washing machine factory plans to produce 1400 washing machines per month. As a result, the whole year's production task is completed two months in advance. How many washing machines are actually produced per month?
1400 × 12 equals 16800 sets
16800 (12-2) is equal to 1680 sets
Shixin watch factory originally planned to produce 1000 watches in 25 days, but actually produced 50 watches a day. How many days ahead of schedule did it actually complete the task?
25-1000 △ 50 = 25-20, = 5 (days); a: the actual task was completed 5 days ahead of schedule
The original plan of the washing machine factory was to produce 40 washing machines every day, which would be completed in 25 days. In fact, it would produce 1 / 4 more washing machines every day. How many days in advance
The actual daily production is 40 * (1 + 1 / 4) = 50 sets
The actual number of days is: 40 * 25 / 50 = 20 days
Advanced: 25-20 = 5 days
A washing machine factory produced 1200 washing machines in the first quarter, equivalent to 5 / 2 of the annual plan. How many washing machines does the factory plan to produce in the whole year?
If the first quarter completion is 5 / 2, the annual task = 1200 △ 5 / 2 = 480 units
If 2 / 5 is completed in the first quarter, the annual task is 1200 ／ 2 / 5 = 3000 units
The washing machine factory plans to produce 25500 washing machines this year, of which the quantity ratio of type I, type II and type III washing machines is 1:2:14. How many washing machines are each planned to produce?
Suppose I, II and III washing machines produce X, 2x and 14x sets respectively. According to the meaning of the question, we can get: x + 2x + 14x = 25500. The solution is: x = 1500, 2x = 2 × 1500 = 3000, 14x = 14 × 1500 = 21000. Answer: I, II and III washing machines produce 1500, 3000 and 21000 sets respectively
The product of numerator and denominator of a simplest true fraction is 150. What fraction is the simplest true fraction?
Four
1 / 150, 2 / 75, 3 / 50, 6 / 25, you can find the common divisor of 150, because it is a true fraction, so the denominator must be less than or equal to 150, because the numerator denominator must be an integer, and the numerator must be smaller than the denominator, so the product of 150 has the following groups: 150 * 1, 75 * 2, 50 * 3, 25 * 6, 15 * 10
A simplest fraction, whose product of numerator and denominator is 28, may be______ ．
Since 28 = 4 × 7 = 1 × 28, the simplest truth score may be 47 or 128
A simplest fraction, whose product of numerator and denominator is 28, may be______ ．
Since 28 = 4 × 7 = 1 × 28, the simplest truth score may be 47 or 128
A denominator is the smallest true fraction. If the numerator of the fraction is increased by 4 times, the denominator is added with 8 to get a new fraction. What is the fraction?
Such as the title
The original fraction is 1 / 2, the molecule is increased by 4 times, that is, 1x4 + 1 = 5, and the new fraction is 5 / 10
RELATED INFORMATIONS
- 1. The sum of the numerator and denominator of the simplest true fraction is 18. What is the possible fraction?
- 2. What is the maximum true fraction of molecule 8?
- 3. If a is 3 / 4 of B and B is 5 / 6 of C, how many parts of C is a, and how many less is a than C?
- 4. There are () 1 / 8 in 1 / 2, 5 / 24 is a fraction of 25 / 36, and 3 / 4 of () is 60
- 5. 1 meter = how many meters in 5 = how many meters in 8 = how many meters in 12 = how many meters in 12
- 6. 8 decimeters, a few decimeters The answer is urgent, thank you!
- 7. What's 12 minus 19 / 8 and 7 / 12?
- 8. Divide 5 kg of sugar into 8 parts on average. How many parts of the total weight are each? How many parts of the total weight are each? How many parts of the total weight are 5 kg?
- 9. At 12:00 on September 8, 2005, Beijing time, how many parts of the world are located on September 8, 2005?
- 10. Take the length of this road as 1, what percentage of the road does the first team build every day?
- 11. Three fifths of a five meter long wire is used, and () meters are left. Three fifths of a five meter long wire is used, and a few fifths of a full length is left
- 12. Mom bought 20 apples and ate 6 of them. What's the proportion of the remaining apples?
- 13. What is the easiest way to calculate 19 and 19 / 18x (- 18)?
- 14. Observe the following three lines: the first line: 2,4,8,16,32,64, the second line: 0,6,6,18,30,66, the third line: 1,2,4,8,16,32 What is the relationship between the number of the second and third rows and the number of the first row
- 15. Find the rules, the first line 1 ~ 4, the second line 5 ~ 9, the third line 10 ~ 16 How many numbers are there in line 8? 4 is 4, 9 is 5, 10 ~ 16 is 7 How many numbers are there in line 8? How many numbers are there in lines 1 to 10~
- 16. Find the rule and fill in 2,3,5,7,9, ()
- 17. Zhang Min poured a cup of pure milk, first drank 1 / 2 (the slash represents the fractional line, 1 / 2 is half), then filled it with boiling water, then drank 1 / 3 of the whole cup, finally filled it with boiling water and drank it all. Q: did Zhang Min drink more milk or water? Zhang Min poured a cup of pure milk, first drank 1 / 2 (the slash represents the fractional line, 1 / 2 is half), then filled it with boiling water, then drank 1 / 3 of the whole cup, finally filled it with boiling water and drank it all. Q: did Zhang Min drink more milk or water? Why?
- 18. 1. There is a fraction. If the numerator and denominator are all increased by 1, the fraction becomes 1 / 2. If the numerator and denominator are all decreased by 1, the fraction becomes 2 / 5. Find the fraction 2、1/1×2+1/2×3+1/3×4+…… +What is the value of 1 / 9 × 10? 3. To build a section of highway, team a will build 10 fields separately, and team B will build 12 days separately. If team B builds 4 days first, and the rest team a will build alone, how many days will it take? 4. There are 310 people in two workshops. Three fifths of the people in workshop a are equal to two fifths of the people in workshop B. how many people are there in workshop a and workshop B? 5. It takes 15 hours for car a to drive from city a to city B, and 12 hours for car B to drive from city B to city A. after a few hours, can the two cars meet? 6. Four cows and three horses eat 90 kg of grass per day, eight cows and two horses eat 140 kg of grass per day. How many kg of grass per cow and horse per day? 7. A student participated in the test and found that if he got 97 in this test, his average score was 90. If he got 73, he was puzzled that his average score was 87. How many tests did the student take, including this test? 8. Party A and Party B have several yuan in total, of which Party A accounts for 60%. If Party B gives Party A 15 yuan, the remaining money of Party B is 3 yuan less than 25% of the total money. How much yuan do Party A and Party B have in total? 9. 2 / 3 of the number a is equal to 1 / 5 of the number B. how much less is the number a than the number B? 10. If a commodity is sold at 80% of the price, it can make a profit of 20%. If it is sold at the price, what percentage can it make? The most important problem is that children say that there are only unknowns in learning. Only x and Y haven't been learned yet. It seems that x alone can't be used
- 19. Fill 10, 15, 20, 30, 40 and 60 in the circle below to make the product of three numbers on each side of the triangle equal
- 20. First question 1.is,the,bus,the,bench,take,to,going,them,to. 2.are,going,when,to,we,swim? 3.to,who,we,meet,going,are? 4.swim,don't ,after ,meal, Second question Look (past tense)—— Tool (prototype)—— He (accusative)—— Light (antonym)—— Big (antonym)—— Talk (antonym)—— Thin (antonym)—— Child (plural)—— Grow (present participle)—— Strong (antonym)——