A walks with a speed of 6 km hr and after 5 hr of his start B starts running towards A at a speed of...........

Quantitative Aptitude ( CCS) Time & distance

A walks with a speed of 6 km/hr and after 5 hr of his start, B starts running towards A at a speed of 8 km/hr. At what distance from start will B catch A.

100

110

120

140

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Explanation:

In 5hrs, A will cover 30 km. Now, at some distance ‘x’. So A will cover X distance and B will cover 30 + X.
x/6 = (30+x)/8
x = 90. So distance from start after which B will catch A = 120km