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 450 km from the starting point ? Choose the correct option:
A) 8 hrs 29 min
B) 4 hrs 50 min
C) 2 hrs 28 min
D) 6 hrs 28 min
E) 1 hrs 28 min
Explanation:   Time taken to cover 450 km = 450/100 = 4 hrs 30 mins   Number of stoppages = 450/75 - 1= 
<gadget id="calculator">450/75 - 1</gadget>
<output>5</output>
5   Total time of stoppages= 4 x 5 = 20 min   Hence, total time taken = 4 hrs 50 min.   Answer: 4 hrs 50 min
<result>B</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 450 km from the starting point ?