Question : Krishna travels from point A to point B in 6 hours and returns to point A from point B in 5 hours. Point A and Point B are 220 miles apart along a straight highway. What is the average speed of Krishna for the whole journey?
Option 1: 44 miles/hr
Option 2: 40 miles/hr
Option 3: 50 miles/hr
Option 4: 22 miles/hr
Correct Answer: 40 miles/hr
Solution :
$\text{Average speed}=\frac{\text{Total distance}}{{\text{Total time}}}=\frac{220+220}{6+5}=\frac{440}{11}=40$ miles/hr
Hence, the correct answer is 40 miles/hr.
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