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Boyle's Law states that the volume of a gas varies inversely with the pressure of the gas if the temperature remains constant. At sea level, where atmospheric pressure is 14.7 lb/in^2, a balloon used for underwater rescues contains 50 ft^3 of air. Find the volume of...

Lynn can mow the lawn in 3 hours using a riding lawn mower. Her brother can mow the same lawn in 7 hours using a push mower. How long would it take them to mow the lawn working together?

Steve's first aquarium had a rectangular base that was 8 inches longer than it was wide. He replaced this with a larger aquarium that was 2 inches wider and 4 inches longer than the first one. He found that if he filled each to a depth of 10 inches, it required 840...