Correct Answer - Option 4 : 1(1/4) km
Given:
A man riding on a bicycle at a speed of 15 km/h crosses a bridge in 5 min.
Formula used:
Distance = speed × time
1 min = (1/60) hours
Calculation:
Speed = 15 km/h
Time = 5 min
Time in hours
⇒ 5 × 1/60
⇒ 1/12 hours
According to the question,
Distance = speed × time
⇒ 15 × 1/12
⇒ 1\(\frac{1}{4 }\) km
∴ The length of bridge is 1\(\frac{1}{4 }\) km.
