Problema Solution
A bus took a 330 mile trip in 7 hours. The speed was 54 mph for the first part of the trip, and 30 mph for the return trip. How many hours were traveled at each speed?
Answer provided by our tutors
distance = speed * time
let 'x' represent the number of hours travelled at 54mph, then '7-x' represents the number of hours travelled at 30mph
330 = 54x + 30(7-x)
solving for 'x' we have x=5
7-5=2
5 hours were travelled at 54mph, 2 hours were travelled at 30mph