Bethany ran for 10 miles on Monday. Her speed was twice as fast during the second 5 miles than her first 5 miles of her run. Which of these expressions shows the time she ran? Let s = the speed during the first half of Bethany's run.

A. (5)/(3x)
B. (15)/(x)
C. (15)/(2x)
D. (10)/(3x)

Question

Bethany ran for 10 miles on Monday. Her speed was twice as fast during the second 5 miles than her first 5 miles of her run. Which of these expressions shows the time she ran? Let s = the speed during the first half of Bethany's run.

A. (5)/(3x)
B. (15)/(x)
C. (15)/(2x)
D. (10)/(3x)

kropot72 · Answer

The question gives the speed during the first half of Bethany's run as s. However the answer choices appear to give that speed as x. Which is correct?

a1234 · Answer

I'm sorry, it was supposed to be s, I just put it down as x :). Actually, I figured how to do the problem. Thanks anyway!