An express traveled at an average speed of 100 km/hr, stopping for 4 min after every 75 km. How long did it take to reach its destination 300 km from the starting point ? Choose the correct choice from the following choices
A) 8 hrs 29 min
B) 6 hrs 28 min
C) 3 hrs 12 min
D) 6 hrs 28 min
E) 1 hrs 28 min
Explanation:   Time taken to cover 300 km = 300/100= 
<gadget id="calculator">300/100</gadget>
<output>3</output>
3 hrs.   Number of stoppages= 300/75 - 1= 
<gadget id="calculator">300/75 - 1</gadget>
<output>3</output>
3   Total time of stoppages= 4 x 3 = 12 min   Hence, total time taken = 3 hrs 12 min.   Answer: 3 hrs 12 min
<result>C</result>
An express traveled at an average speed of 100 km/hr, stopping for 4 min after every 75 km. How long did it take to reach its destination 300 km from the starting point ?