An interval of 3 hours 40 minutes is wrongly estimated as 3 hours 45.5 minutes. The error percentage is :

A. 2.5%

B. 5%

C. 5.2%

D. 5.5%

Answer: Option A

Solution(By Examveda Team)

Correct time :
= 3 hrs 40 min
= (3 × 60 + 40) min
= 220 min
Error = 5.5 min
Error % :
= $$\left( {\frac{{5.5}}{{220}} \times 100} \right)$$  %
= $$\frac{5}{2}$$ %
= 2.5%