Kevin and Mona are running around a rectangular field at a speed of 27 km/h and 36 km/h. The perimeter of a rectangle is 108 m. Calculate the ratio of time taken by Mona is to Kevin to complete one round of rectangular field.
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Kevin=27km/hr=27*5/18m/s=15/2m/s=7.5m/s
Mona=36km/hr=36*5/18m/s=10m/s
Distance=108m
Time taken by Kevin=D/s=108/7.5=108*10/75=72/5
=14.4seconds
Time taken by Mona=D/s=108/10=10.8seconds
The ratio of their time taken=14.4/10.8=144/108
=4/3=4:3
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