Question

A car travelling at a certain constant speed takes 2 seconds longer to travel 1 kilometre than it would take one kilometre at 75 km per hour. at what speed in kilometres per hour is the car travelling
pls tell​

Answer 1

Answer:

72 kilometers

Explanation:

75 km per hour = 75 kilometer in 60 minutes

75 kilometers = 60 × 60 = 3600 second

1 kilometre = 48 seconds

48 + 2 = 50 seconds

50 seconds = 1 kilometre

3600 seconds = (3600 ÷ 50) × 1 kilometre

= 72 kilometers

Ans. 72 kilometers