CMAT 2018 - Slot 1 Quantitative Aptitude Question 10
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Quantitative Aptitude
Given speed of Ankush = 3 rounds per hour = 1 round per 20 min
Whereas speed of Babulal = 5 rounds per hour = 1 round per 12 min.
Let us consider Ankush as stationery at the starting point.
The relative speed of Babulal with respect to Ankush = 3 rounds per hour + 5 rounds per hour = 8 rounds per hour
This implies, In one hour Babulal crosses Ankush 8 times.
So, starting from 9.00 am to 10.30 am i.e., 1.5 hours or 90 min, Babulal crosses Ankush 12 times.