Subject: mathqa
Question: due to construction , the speed limit along an 10 - mile section of highway is reduced from 55 miles per hour to 35 miles per hour . approximately how many minutes more will it take to travel along this section of highway at the new speed limit than it would have taken at the old speed limit ?
Option: 
A: 6.24
B: 24
C: 15
D: 8
Answer: A