Question

12. A train is travelling at a constant speed
and covers 165 km in 3 hours.
(a) How much time will it take to cover
440 km?
(b) How much distance can it travel in 7
hours?​

Answer 1

Answer :

A train is travelling at a constant speed

and covers 55 km per hour

(a) 8 hours time will it take to cover

440 km

(b) 385 km distance can it travel in 7

hours

Solution :

distance travelled by train = 165 km in 3 hour

so the speed of train = distance/time

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ = 165/3

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ = 55 km per hour

(a) time taken to travel 440 km

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ = 440/55

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ = 8 hours

(b) distance travelled by 7 hours

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ = 55 x 7

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ = 385 km