Question

1. If a man travels at a speed of 30 km/h, he
reaches his destination 10 min late and if
he travels at a speed of 42 km/h, he
reaches his destination 10min early. The
distance travelled is
[JNV 2019]
(1) 36 km
(2) 35 km
(3) 40 km
(4) 42 km​

Answer 1

Step-by-step explanation:

let the distance be x

a/q

x/30-x/42= (10+10)min

(42x-30x)42×30= 20/60

12x/1260= 1/3

x/105=1/3

x=35km

hence the distance travell is 35km

#666