Question

Question 26
A bus starts from Mumbai at 11:10a.m. It reaches Pune at 4:00p.m
moving with an average speed of 72Kmph. Calculate the distance between
Mumbai and Pune in kilometers.​

Answer 1

Explanation:

Let the total distance between Mumbai and Pune be D.

Also, we assume that the trains cross each other at a time given by x.

Speed of train which leaves Pune is given by

4

D

and that which leaves Mumbai is given by

3.5

D

(x−7.30am)×

4

D

+(x−9.30am)×

3.5

D

=D

Let x−9.30am be y

∴x−7.30am=y+2

⇒

8

2(y+2)

+

7

2y

=1

⇒14y+28+16y=56

∴y=

30

28

hours =56 minutes

∴x=10.26am