Question 28961
One hour was in the city so 5-1 = 4 hours was in the highway.
City's speed = x/2 and highway speed = x
total distance travelled = 387


1(x/2)+4(x)=387
Multiply the equation by 2 to remove the fraction and simplfy
x+8x=774
9x=774
x=86 (highway speed)

86/2=43 (city speed)


Distacne travelled:
1(43)=43
4(86)=344


Hence, the city speed was 43mph with total distance travel in city is 43 miles and the highways speed was 86mph, with total distance on highway was 344 miles.
Paul.