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Two pipes together can fill a reservoir in 6 hours 40 minutes. Find the time each alone will take to fill the reservoir if one of the pipes can fill it in 3 hours less than the other.

Three consecutive numbers have a combined sum of 405. Name the smallest of the three numbers. Solve.

Claire has a small personal business making scented candles. Her startup costs are $200. Her cost to make each cangle is $1.50. She sells each candle for $4.00. Use a system of equations to determine the number of candles she must sell to break even. (Write one...