Question

Speed of a car is 45 km/h. How much time will a superbike take to cover a distance of 850 m if speed of the superbike is 4 times of the car?

1. 18 sec
2. 51 sec
3. 42 sec
4. 17 sec

Answer 1

Correct Answer - Option 4 : 17 sec

Given:

Speed of a car is 45 km/h

Speed of the superbike is 4 times of the car

Concept used:

Time = Distance/Speed

Calculation:

Speed of the superbike = 45 × 4

⇒ 180 km/h

⇒ Speed in m/sec = 180 × 5/18

⇒ 50

Time takes to cover 850 m = 850/50

⇒ 17

⇒ Time = 17 sec

∴ It will take 17 sec.