SOLUTION: Nancy jogs & walks to school each day. She averages 4km/h walking and 8km/h jogging the distance from home to school is 6km and she makes the trip in 1 hr. How far does she jog in

Question 239303: Nancy jogs & walks to school each day. She averages 4km/h walking and 8km/h jogging the distance from home to school is 6km and she makes the trip in 1 hr. How far does she jog in a trip?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Nancy jogs & walks to school each day. She averages 4km/h walking and 8km/h jogging the distance from home to school is 6km and she makes the trip in 1 hr. How far does she jog in a trip?
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Jogging DATA:
rate = 8 km/h ; distance = x km ; time = d/r = x/8 hrs.
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Walking DATA:
rate = 4 km/h ; distance 6-x km ; time = d/r = (6-x)/4 hrs.
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Equation:
time + time = 1 hr.
x/8 + (6-x)/4 = 1 hr
Multiply thru by 8 to get:
x + 12-2x = 8
-x = -4
x = 4 km (distance she jogs in a trip)
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Cheers,
Stan H.
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