Question
A person travels from P to Q at a speed of 40 km/hr and returns by
increasing his speed by 50%. What is his average speed for both the
trips?
A person travels from P to Q at a speed of 40 km/hr and returns by
increasing his speed by 50%. What is his average speed for both the
trips?
Answer: Option B
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Speed on return trip=150% of 40 = 60 kmph.
Average speed=(2 x 40 x 60/40+60)km/hr
=(4800/100)km/hr
=48 km/hr.
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