. Fast train gets from the starting to the final station in 4 hours and 20 minutes. The slower local train, whose average speed

Question

3 years ago

15

. Fast train gets from the starting to the final station in 4 hours and 20 minutes. The slower local train, whose average speed

is 30 km/h lower, is able to make the same journey in 7 hours and 40 minutes. What is the speed of the fast train and what is the speed of the local train ?

Mathematics

1 answer:

madreJ [45] · Answer 1 · 2022-09-06T17:21:49+03:00

madreJ [45]3 years ago

3 0

Answer:

Fast train speed: 69 km/h

Slow train speed: 39 km/h

Step-by-step explanation:

Fast train:

-Time: 4.33

-Speed: x

-Distance: 4.33x

Slow train:

-Time: 7.66

-Speed: x - 30

-Distance: 7.66(x - 30)

7.66(x - 30) = 4.33x

7.66x - 229.8 = 4.33x

3.33x = 229.8

x = 69