Question

the ratio of speeds of two trains is 7:9. If the fastest train covers the distance 630 km in 14 hrs ,find the time taken by the other rain to cover the same distance.

Answer 1

Answer:

Step-by-step explanation:

let the speed of two trains be 7x and 9x

9x =630/14

x =630/14*1/9

x=5

so speed of other train=7*5=35km/hr

so time taken by other train =630/35=18 hrs

hope it helps you

happy learning!!!

Answer 2

Answer:

18hours

Step-by-step explanation:

let the speeds of the trains be 7x and 9x say... so the train which run fast be 9x

9x= 630/14

x=70/14

=5kmph

distance is equal

so

.Speed=d/t.

7x = 630/t

7*5=630/t

t=90/5

=18hours