SOLUTION: Jacob started biking to the coffee shop traveling 9 mph, after some time the bike got a flat so Jacob walked the rest of the way, traveling 2 mph. If the total trip to the coffee s
Question 1076517: Jacob started biking to the coffee shop traveling 9 mph, after some time the bike got a flat so Jacob walked the rest of the way, traveling 2 mph. If the total trip to the coffee shop took 9 hours and it was 60 miles away, how long did Jacob travel at each speed? Found 2 solutions by josgarithmetic, ankor@dixie-net.com:Answer by josgarithmetic(39626) (Show Source): You can put this solution on YOUR website!
SPEED TIME DISTANCE
BIKE 9 b 9b
WALK 2 w 2w
Total 9 60
- -----Hours by bike
-------hours walking Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website! Jacob started biking to the coffee shop traveling 9 mph, after some time the bike got a flat so Jacob walked the rest of the way, traveling 2 mph.
If the total trip to the coffee shop took 9 hours and it was 60 miles away, how long did Jacob travel at each speed?
:
let b = time spent biking
then
(9-b) = time spent walking
:
Write a distance equation, dist = speed * time
bike dist + walk dist = 60 mi
9b + 2(9-b) = 60
9b + 18 - 2b = 60
9b - 2b = 60 - 18
7b = 42
b = 42/7
b = 6 hrs spend biking
then
9 - 6 = 3 hrs spent walking
:
:
:
Confirm this, find that actual dist for each
9(6) = 54 mi
2(3) = 6 mi
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total dist 60 mi