Question

a train takes 3 hours to reach the destination by travelling at the speed of 90 km per hour how long will it take the train when it travels at the speed of 120 km per hour?
( hint - answer is 2 hours 25 min )

give the answer in explanation step by step and solve by inversible variation step​

Answer 1

Step-by-step explanation:

speed = distance

time

so, 90 = distance/3

so total distance to travel is 270km

if the speed is 120km/hr

then

120 = 270/time

time = 270/120

time = 2.3hr

time = 2hr 20min

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Answer 2

Step-by-step explanation:

hope it will help you

ans- 2hours 25 min

it is inverse variation