Question

12. A man crosses a bridge at a speed
of 15 km/hr in 2 minutes. What
will be the length of the bridge ?
(a) 400 metres (b) 50 metres
(c) 800 metres (d) 1 km
​

Answer 1

Speed of man = 15 km/hr.

= 15 * (1000/60)

= 250 m/min

Time taken to cross bridge = 2 minutes.

Length of bridge = Speed * Time

                            = 250 * 2

                            = 500 metres.

Hope it help

Answer 2

Answer:

50 metres

Step-by-step explanation:

absolutely correct answer is option b 50etres