Anna left for city A from city B at 5.20 am. She travelled at the speed of 80 km/hr for 2 hours 15 minutes. After that the speed was reduced to 60 km/hr. If the distance between two cities is 350 kms, at what time did Anna reach reach city A ?

A. 9.20 am

B. 9.25 am

C. 9.35 am

D. 10.05 am

E. None of these

Answer: Option E

Solution(By Examveda Team)

Distance covered in 2 hrs 15 min, i.e.,
= $$2\frac{1}{4}$$ hrs = $$\left( {80 \times \frac{9}{4}} \right)$$  hrs = 180 hrs
Time taken to cover remaining distance :
$$\eqalign{ & = \left( {\frac{{350 - 180}}{{60}}} \right){\text{ hrs}} \cr & = \frac{{17}}{6}{\text{ hrs}} \cr & = 2\frac{5}{6}{\text{ hrs}} \cr & = 2{\text{ hrs }}50\min \cr} $$
Total time taken :
(2 hrs 15 min + 2 hrs 50 min) = 5 hrs 5 min
So, Anna reached city A at 10.25 am