Question

A cycle travels at a speed of 45 km/h. How far will it travel in 36 minutes?
A.27 km
B.20 km
C.36 km
D.45 km

Answer 1

Hint: In this question, we have given the speed of a cycle is 45 km/h. To find the distance travelled by a cycle in 36 min, we have to use the formula of Distance = speed X Time. (Convert minute into hour because speed is given in km/h.)

Complete step-by-step answer:
Speed of a cycle = 45 km/h
Time = 36 minutes
Here, we will convert time into hours from minutes because Speed is given in km/h.
60 minutes = 1 hours
36 minutes = $\dfrac{1}{{60}} \times 36 = \dfrac{3}{5}$hours
Distance travelled by a cycle in $\dfrac{3}{5}$hours = $Speed \times time$(We know that Speed = $\dfrac{{dis\tan ce}}{{time}}$)
= 45 $ \times \dfrac{3}{5}$
= 27 km (Ans.)
Correct option is A
Note: Students should be careful, they should check that unit of speed, distance and time should be similar. For example: If speed is in m/sec then time should be in second and distance should be in meter.