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മണിക്കൂറിൽ 43 കിലോമീറ്റർ വേഗതയിൽ സൈക്കിളിൽ സഞ്ചരിക്കുന്ന ഒരാൾ 54 മിനിറ്റിനുള്ളിൽ ഒരു പാലം കടക്കുന്നു. പാലത്തിന്റെ നീളം എത്ര?

A38.7 km

B45.8 km

C46.4 km

D9.8 km

Answer:

A. 38.7 km

Read Explanation:

In this case, the distance the man covers is equal to the length of the bridge.

The given values are:

Speed =43 km/h= 43 \text{ km/h}

Time =54 minutes= 54 \text{ minutes}

To use the formula, the units for time must be consistent. Since the speed is in kilometers per hour (km/h\text{km/h}), the time must be converted from minutes to hours.

There are 60 minutes in an hour, so:

54minutes=54/60=0.9hours54\text{minutes}=54/60=0.9\text{hours}

Length of the bridge=43×0.9\text{Length of the bridge} = 43 \times0.9

=38.7Km=38.7Km


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