Christy drove 300 miles on her vacation. She drove an average of 1.25 times faster on the second 150 miles of her trip. Which expression represents the time she spent driving? Let x= her speed on the first half of the trip.
a.375/x
b. 337.5/x
c.270x
d. 270/x

Question

Christy drove 300 miles on her vacation. She drove an average of 1.25 times faster on the second 150 miles of her trip. Which expression represents the time she spent driving? Let x= her speed on the first half of the trip.
a.375/x
b. 337.5/x
c.270x
d. 270/x

anteater · Answer

If x is the speed on the first half of the trip, what expression would show the speed on the second half of the trip?

anteater · Answer

Since she drove 1.25 times as fast as on the first half.