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Asked by
Kimiko
Matt and Carla together can mow a lawn in 8 hours, alone Carla takes four times longer than Matt. How long does Matt take?
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Answered by
Steve
If Matt takes m hours, then Carla takes 4m. So, together,
1/m + 1/4m = 1/8
5/4m = 1/8
m = 10
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