Question

A man covers a certain distance in 50 minutes, if he travels at a speed of 48 km /hr. At what speed should he travel in order to reduce the time of journey to 20 minutes ​

Answer 1

Answer:

120 km/hr

Step-by-step explanation:

Let the distance covered be X

Then X = v × t

Time in hours = 50÷60 = 5/6

X = 48 × 5/6 = 40 Km

Reduced time = 20 min = 20÷60 = 1/3 hrs

V = X/t = 40÷(1/3) = 40 × 3 = 120 km/hr