- #1
Elbobo
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Homework Statement
A boy walks at an average speed of 3 miles per hour to his school, and then runs back at an average speed of 5 miles per hour along the same route. The total travel time is 1 hour. What was the total distance traveled?
The Attempt at a Solution
OK it's a practice question I saw in my SAT prep book, and I feel soooo incredibly stupid to not be a ble to solve this. The answer is 3.75 miles, btw.
d1 = d2
dt = d1 + d2
t1 + t2 = 1 hr
d1 = v1t1
d2 = v2(1-t1)
dt = v1t1 + v2-v2t1
dt = 3t1 + 5 - 5t1
Then I get stuck here.
Pretty sure I am over complicating the problem, so could somene help me?