Question 817878: Balloon trip: A balloonist is trying to complete a nonstop trip around the world. During the course of his trip, he traveled 684 miles over land and 1197 over water. The total trip was 39 hours, he traveled 3 more hours over water than he traveled over land.
A. How long did he travel over land
B. How long did he travel over water
C. How much faster did he travel over water than over land.
Thank you,
Answer by TimothyLamb(4379)   (Show Source):
You can put this solution on YOUR website! L = 684 miles
w = 1197 miles
L + w = 1881 miles
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time:
tw = tL + 3
tw + tL = 39
tL + 3 + tL = 39
2tL = 36
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tL = 18 hours
tw = 21 hours
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speeds:
trip average speed:
s = d / t
s = 1881 / 39
s = 48.230769 mph
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land and water speeds:
sL = 684 / 18
sL = 38 mph
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sw = 1197 / 21
sw = 57 mph
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speed difference:
sw - sL = 19 mph
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