Question

В сервисе отремонтировали 40 моторов у автомобилей и мотоциклов. Сколько было отремонтировано автомобилей и сколько мотоциклов, если из сервиса выкатилось 100 колёс?

Answer 1

допустим, что на каждый мотор приходится 2 колеса, тогда 40*2=80 колес,

100-80=20 колес,

20/2=10 машин,

у 10 машин 10*4=40 колес,

100-40=60 колес у мотоциклов,

60/2=30 мотоциклов

Answer 2

Calculating the Number of Repaired Cars and Motorcycles

To calculate the number of repaired cars and motorcycles, we can use the fact that each car has 4 wheels and each motorcycle has 2 wheels.

Given that 100 wheels rolled out of the service after repairing 40 engines, we can calculate the number of cars and motorcycles repaired.

Let's denote: - C as the number of cars repaired - M as the number of motorcycles repaired

We can use the following equations: 1. C + M = 40 (total number of engines repaired) 2. 4C + 2M = 100 (total number of wheels rolled out)

Solving these equations will give us the values of C and M.

Solving the Equations

We can solve the above equations to find the values of C and M.

From equation 1, we have C = 40 - M.

Substituting this value of C into equation 2, we get: 4(40 - M) + 2M = 100 160 - 4M + 2M = 100 160 - 2M = 100 -2M = -60 M = 30

Now that we have the value of M, we can find the value of C: C = 40 - 30 C = 10

Conclusion

Therefore, 10 cars and 30 motorcycles were repaired in the service.