Question

A car travelling at 60km/hr left Dehradun at 3p.m . One hour later , another car travelling at 80km/hr started over the same road to overtake the first , how long must the second car travel to overtake the first car​

Answer 1

Answer:

hope this answer help you dear

Answer 2

Answer:

→ 3 hours and 240 km.

Step-by - step explanation:

→ Let the time taken by second car overtake to the first car be x hours after it started.

→ Total time taken by first car = (x + 1) hours.

→ Total distance covered by first car in (x + 1) hours = 60 (x + 1) km.

→ Distance covered by second car in x hours = 80X

Thus, Distance coved by first car is equal to second car.

.°. 60 (x + 1) = 80x.

●60x + 60 = 80x.

→ 60 - 80x = 60x.

●60 - 20x.

● 60\20 = X

●x = 3.

Hence, the second car traveled in 3 hours to overtake the 1st car.

Therefore, time taken by second car to overtake the first car = 80x = 80 x 3 = 240 km.

Hope it helps you