SOLUTION: Liz and Jose rode their bikes into the country at a rate of 12 miles per hour. They return on the same path but are now tired, they slow down and maintain a speed of 8 miles per ho

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Question 1025328: Liz and Jose rode their bikes into the country at a rate of 12 miles per hour. They return on the same path but are now tired, they slow down and maintain a speed of 8 miles per hour. If their whole ride took 10 hours how much distance did they cover?
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
                  rate        time        distance
GOING              12          x            d
RETURNING           8          y            d
total                          10          2d




Use basic rule RT=D and apply to the information in the data table.

system%2812x=d%2C8y=d%2Cx%2By=10%2C12x%2B8y=2d%29

Or you might choose equating two d expressions.
highlight%28system%2812x=8y%2Cx%2By=10%29%29
and this is the system you would want to solve. You can then compute d from it. Then compute 2d.

Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!

Liz and Jose rode their bikes into the country at a rate of 12 miles per hour. They return on the same path but are now tired, they slow down and maintain a speed of 8 miles per hour. If their whole ride took 10 hours how much distance did they cover?
Let distance each way be D
Then time taken on outbound trip = D%2F12, and time taken on return trip = D%2F8
The following TIME equation is thus formed: D%2F12+%2B+D%2F8+=+10
2D + 3D = 240 -------- Multiplying by LCD, 24
5D = 240
D, or distance, one-way = 240%2F5, or 48 miles
Total distance covered: 2(48), or highlight_green%2896%29 miles