Question

A car travels a certain distance in four hours. If it had travelled 10 km faster, it would have taken only three hours. Find the distance











Answer should be 120 km​

Answer 1

Answer:

y = 30km/hr x =120km

Step-by-step explanation:

Let distance be x km and speed be y km/h.

Then according to given condition tha he covered distence in 4 hour so,

⇒ 4y = x ( using formula Distence = speed * time )

-----------(1)

Again it is given that he takes 3 hour if he travels at a speed that is 10 km/hr moree by usual speed so,

⇒ 3 (y + 10) = x -----(2)

Solving equation (1) and (2) we get ,

y = 30km/hr and x = 120km