Question

The distance travelled by an auto-rickshaw in 20 minutes is 15 km. Find out the speed of the autorickshaw in km/h and m/s.​

Answer 1

Given:

Distance covered by the Auto = 15km

Time taken = 20 mins

To Find:

Speed of the autorickshaw

Solution:

Time = 20 min

= 20/60 ( As one hour has 60 minutes)

= 1/3 hr

Now,

Speed = Distance/Time

= 15 × 3

= 45 km/hr

To convert km/hr to m/s, we multiply the speed by 5/18.

45 x 5/18

= 225/18

Answer: The speed in Km/h is 45 and in m/s is 225/18

Answer 2

GIVEN,

In 20 mins the rickshaw travels 15km

TO FIND,

speed of autorickshaw in km/h and m/s

SOLUTION,

we are given the time taken by the rickshaw is 20 mins,

let us convert this to hours,

time= $\frac{20}{60} hr$ =$\frac{1}{3} hr$

the rickshaw travels 15 km in $\frac{1}{3} hr$

we know that,

DISTANCE = SPEEDx TIME

substituting the values, we get,

15= speed x $\frac{1}{3} hr$

speed= 15 x3

speed= 45KM/hr

now to convert speed from km/hr to m/s we multiply by $\frac{5}{18}$

hence speed in m/s = 45 x $\frac{5}{18}$

speed= $\frac{225}{18}$ m/s

speed=  12.5 m/s

HENCE SPEED OF THE RICKSHAW IS 45Km/hr AND 12.3 m/s.