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One car drove 160km from place a to place B, which is exactly 4 / 7 of the whole journey. The other car drove 1 / 4 of the whole journey from place B to place a How many kilometers did a and B get together? How many kilometers did the second car travel?
160 divided by 4 / 7 is the distance between a and B, which is calculated by yourself
Second question and answer: multiply the number calculated above by 1 / 4 to get the answer to the second question
It is 4 / 7 of the whole journey for one car to drive 160km from place a to place B, and 1 / 4 of the whole journey for another car to drive 160km from place B to place a
The distance between the two cars is 50 km
A car has traveled 560km from place a to place B, which is exactly 4 / 7 of the whole journey; if another truck goes from place B to place a
A car runs 560km from a to B, which is exactly 4 / 7 of the whole journey; if another truck runs 4 / 1 of the whole journey from B to a.
How many kilometers are there between a and B? How many kilometers has the truck traveled?
A and B: 560 / (4 / 7) = 560 * (7 / 4) = 980 km
Truck: 980 * (1 / 4) = 245km
A car from a to B, if the car three fourths of an hour travel 60 kilometers, so the speed to complete the whole journey takes 5 hours, then how many kilometers between a and B
There is a process
Distance = 60 △ 3 / 4 × 5 = 400 km
In Xingxing fruit juice store, a kind of fruit juice is 1 yuan more expensive than B kind of fruit juice. Xiaobin and his classmates asked for 3 cups of B kind of fruit juice and 2 cups of a kind of fruit juice, which cost 16 yuan in total. What are the unit prices of a kind of fruit juice and B kind of fruit juice?
Suppose B juice is x yuan, then a juice is (x + 1) yuan. From the meaning of the question, 3x + 2 (x + 1) = 16, the solution is: x = 145, then a juice is 145 + 1 = 195 yuan. Answer: the unit price of a juice and B juice is 145 yuan and 195 yuan respectively
A kind of fruit juice in a fruit juice store is one yuan more expensive than B kind of fruit juice. Xiaobin and his classmates asked for three glasses of B kind of fruit juice and two glasses of a kind of fruit juice, a total of 16 yuan. What's their unit price?
Suppose that the unit price of B juice is x yuan, then the unit price of a juice is x + 1 yuan, then 3 cups of B and 2 cups of a are 16 yuan, then it is
3 * x + 2 * (x + 1) = 16, solving the equation, we get x = 14 / 5 = 2.8 yuan, then the unit price of B juice is 2.8 yuan, and that of a juice is 2.8 + 1 = 3.8 yuan
It costs 26 yuan for two snacks and one drink, and 18 yuan for one snack and three drinks. How much does it cost for one snack and one drink?
Series of equations
Dim sum X Yuan drink y yuan
2X+Y=26
X+3Y=18
The solution is x = 12, y = 2
Xiao Ming paid 45 yuan for six snacks and three drinks, and 30 yuan for three snacks and four drinks. How much is it for each snack and drink?
Set X for dim sum and y for drink
6x+3y=45(1)
3x+4y=30(2)
Double (2)
6x+8y=60(2')
Put (2 '- (1)
6x+8y-6x-3y=60-45
y=3
The solution is x = (45-3 * 3) △ 6 = 6
A: 6 yuan for each snack and 3 yuan for each drink
Uncle Wang and some friends went to the tea room to have a rest. They started to buy 6 snacks and 3 drinks, which cost 45 yuan in total. Later they bought 4 drinks of the same 5 snacks, which cost 42 yuan in total. How much is each snack and drink? We can't use two unknown equations to solve the problem!
If snacks are set at x yuan, drinks will be (45-6x) / 3
According to the second countable equation:
5x＋3．（45－6x）／3＝42
5x＋45－6x＝42
－x＝－3
x＝3
Substituting x = 3 into (45-6x) / 3
＝（45－6x3）／3
＝27／3
= 9 yuan
A: 3 yuan for snacks and 9 yuan for drinks
It costs 63 yuan to buy 6 snacks and 3 drinks, and 44 yuan to buy 3 snacks and 4 drinks?
8 yuan for each snack and 5 yuan for each drink
Let the dim sum be x and the drink be y. The equations are as follows:
6x+3y=63
3x+4y=44
By solving the equation, we can get: x = 8, y = 5
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