Asked by Ashley

A person can plow out all the driveways on his street with his new four-wheel-drive truck in 6 hours. using a snow blade on a lawn tractor, his neighbor can plow out the same number of driveways in 10 hours. how long would it take them to do the work together?
Answered by oobleck
it will take x hours, where
1/x = 1/6 + 1/10
now just find x
Answered by Melanie
A rectangular sandbox is surrounded on all sides by a strip of grass that is 5 feet wide on all sides. The length of the sandbox is 4 feet more than the width, and the
total area for the sandbox and the grass is 189 square feet. Find the dimensions of the sandbox.
Answered by oobleck
If the width is w, then the length is w+4
Now, they have told you that
(w+10)(w+4+10) = 189
so finish it off.

check for typos, since the dimensions are apparently not integers.
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