Question

If Raj drives faster by 10 km/h, he reaches his village 90 minutes early. If he drives slower by 10 km/h, he reaches the village 150 minutes late. Find the distance he travels. and​

Answer 1

Answer

300 km

Step-by-step explanation:

Solution

let with speed X km/hr he can travel distance

the kilometre in T hr time

So, D=X.T

1st Condition:D=(x+10) (T-1.5)

2nd Condition:D=(x-10) (T+2.5)

Equating,we get

2.5x-10T=25

Similarly,

-1.5x+10T=15

Add

x=40km/he

Pit this in (4), we get T=7.5hr

We get D = 300km