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The number of male workers in a workshop is 1.5 times that of female workers. If five more female workers are recruited, there will be as many male and female workers as before. How many male and female workers are there?
If there are x female workers, the number of male workers is 1.5x
1.5x-x=5
Find x = 10
A: there were 10 female workers and 15 male workers
The number of female workers in a workshop is 30 less than that of male workers, and the ratio of male workers to female workers is 5:3______ People
Answer: there are 45 female workers, so the answer is: 45
There are 36 people in the electric toy workshop, and the number of male workers is nine fourths of the total number. How many are male and female workers?
If the number of male employees is x, then
X/36=4/9
X=4/9＊36
X=16
So there are 16 male workers and 20 female workers
Both teams go from a to B. the speed of B is 20% slower than that of A. It takes six hours for a to complete the whole journey
Q: how many hours does it take for car B to complete the whole journey?
B is 20% slower than A. if a's speed is 1, B's speed is 1.2
That's 1.2 times six hours
6*1.2=7.2
It takes 7.2 hours. Seven hours and twenty minutes
I'm sorry. I'd like to help you, but I really can't count it. I didn't know how to count it when I was studying
I'm ashamed of being scolded by my teacher
When the distance is fixed, the speed is inversely proportional to the time
∵ speed of B = (1-20%) * speed of a = 0.8 * speed of a
The time of a = 0.8 * the time of B = 0.8 * 6 = 4.8 hours
6 / (1-20%) = 7.5 (hours)
7.2 hours is wrong. What our teacher said is equal to 7.5 hours
There is a workshop a and B. If one eighth of the number of a is transferred to B, the number of the two cars is the same. The number of a and B is higher than that of B
There is a workshop a and B. If one eighth of the number of a is transferred to B, the number of these two cars is the same,
B is 1 / 8 × 2 = 1 / 4 less than a
So a is 1, B is 1-1 / 4 = 3 / 4, a: B = 1:3 / 4 = 4:3
On the freeway, if a car with a length of 4 meters and a speed of 110 km / h is ready to overtake a truck with a length of 12 meters and a speed of 100 km / h, it will take about ()
A. 1.6 seconds B. 4.32 seconds C. 5.76 seconds D. 345.6 seconds
Suppose that the required time is x seconds, 110 km / h = 2759 M / s, 100 km / h = 2509 M / s. according to the distance that the car takes is equal to the distance that the truck takes plus the body length of the two cars, the solution is: 2759x − 2509x = 12 + 4, x = 5.76, so choose C
A and B both leave a and B at the same time. The speed of a is three fifths of that of B. the two cars meet at a distance of 24km from the midpoint. How many meters is the distance between a and B
Why
The speed ratio of a and B is 3:5
So when we met, car a went the whole way: 3 ÷ (3 + 5) = 3 / 8
From the midpoint, there is the whole distance: 1 / 2-3 / 8 = 1 / 8
That is, 24 km accounts for 1 / 8 of the whole journey
So the distance between AB and ab: 24 △ 1 / 8 = 192 km
A and B travel the same distance. It takes 6 hours for a car to complete the whole journey. B's speed is 20% slower than a's. how many hours does it take B to complete the whole journey?
Let the distance be "1". The speed of car a is 1 / 6, and the speed of car B is 1 / 6 × (1-20%) = 2 / 15. Therefore, it takes car B 7.5 hours to complete the whole journey
Seven point five
The ratio of the number of people in factory a and factory B is 7:6. After 360 people are transferred from factory a to factory B, the ratio of the number of people in factory a and factory B is 2:3?
A factory for X people
Factory B is a company of y people
x/y=7/6；
（x-360）/（y+360）=2/3；
Just solve the equation
Do it yourself
On the freeway, if a car with a length of 4 meters and a speed of 110 km / h is ready to overtake a truck with a length of 12 meters and a speed of 100 km / h, it will take about ()
A. 1.6 seconds B. 4.32 seconds C. 5.76 seconds D. 345.6 seconds
Suppose that the required time is x seconds, 110 km / h = 2759 M / s, 100 km / h = 2509 M / s. according to the distance that the car takes is equal to the distance that the truck takes plus the body length of the two cars, the solution is: 2759x − 2509x = 12 + 4, x = 5.76, so choose C
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