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Dan and Luck are running in a 20 mile charity benefit race. If Dan runs at 3 mph and Luke runs at 4 mph, how long until their total mileage equals 20 miles?
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Dan and Luck are running in a 20 mile charity benefit race. If Dan runs at 3 mph and Luke runs at 4 mph, how long until their total mileage equals 20 miles?

User UmeshR
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Answer:

one-fifth of $1,000 is $200; a donation of $30 per charity results in a total of $240 in 1. 32 1/2 2. 30 3. Dan went first and dug 1/9 of the total distance early the next morning.

Explanation:

User TryToSolveItSimple
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