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A painter can paint a wall in 1 hours and 10 minutes, whereas his assistant can do the same size wall in 2 hours and 30 minutes. Find their work rate of the job per hour when they work together. Your answer is supposed to be a fraction.
Alan and Jim were asked by their boss to work on a project. Since Jim had to visit a company's factory outside of the state, Alan started the project alone. After 10 days Jim came back and they worked for 5 days to finish the project. If Alan could have finished the...
When a bathtub faucet is turned on (and the drain is shut), it can fill a tub in 6 minutes; when the drain is open, a full bathtub can empty in 11 minutes. How long would it take for the bathtub to fill if the water were turned on with the drain left open?
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