MCQ Practice

On a river , Q is the mid - point between two points P and R on the same bank of the river. A boat can go from P to Q and back in 12 hours, and from P to R in 16 hours 40 minutes. How long would it take to go from R to P?

A

$${text{3}}frac{3}{7}$$ hr

B

5 hr

C

$${text{6}}frac{2}{3}$$ hr

D

$${text{7}}frac{1}{3}$$ hr

Correct Answer: D