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

welshfella · Answer

on first part of the trip  , let time taken = t1
x = 150/t1
on second part, let time taken = t2
1.25x = 150/t2

t1 = 150 /x
t2 = 150/1.25x

t1 + t2 = 150/x + 150 / 1.25x 

can you continue from here

anonymous · Answer

yeah i can continue from there :) thank you soooo much

welshfella · Answer

yw