The ratio of the speeds of two vehicles is 2:3.If the second vehicle covers 72 km in 2 hours,what is the speed of the first vehicle?

distance covered by 2 vehicle =72
time taken by it =2 hrs
so speed of 2 vehicle = 72/2=36 km/hr

suppose value of speed of first vehicle =x

so in proportion
2:3 :: x:36

by calculating
X = 24

so speed of first vehicle is 24 km/ hr