Question

Darts are being fired from a point at an interval of 12 minutes, if the speed of the bullets is 60 kmph. A biker is approaching the shooting point meets the darts at an interval of 10 minutes. What is the speed of the biker?

1. 14 kmph

2. 15 kmph

3. 10 kmph

4. 12 kmph

Answer 1

Correct Answer - Option 4 : 12 kmph

GIVEN:

Darts are being fired from a point at an interval of 12 minutes.

Speed of the bullets = 60 kmph

A biker is approaching the shooting point meets the darts at an interval of 10 minutes.

FORMULA USED:

Distance = Speed × Time

CALCULATION:

We know that the distance covered by the darts in 2 minutes is equal to the distance covered by the biker in 10 minutes.

So,

60 × 2/60 = (x) × 10/60

Here x is the speed of the biker.

So,

x = 12 kmph