NIELIT 2016 MAR Scientist D: 62

Question

A man walks $10$ miles at an average rate of $2$ miles per hour and returns on a bicycle at an average rate of $10$ miles per hour. How long (to the nearest hour) does the entire trip take him?

• A. $4$ hours
• B. $5$ hours
• C. $6$ hours
• D. $7$ hours

Answer 1

He walks $10$ miles at a rate of $2$ miles per hour,

$\therefore$ Time taken by him $= \frac{10}{2} = 5$ hours,

And he returns at a rate of $10$ miles per hour,

Time taken to travel 10 miles back $= 1$ hour

Hence, Total time of entire trip $ = 5+1 = 6$ hours.

(C) is correct.