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Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.
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Huong is organizing paperback and hardback books for her club's used book sale. the number of paperbacks is 12 less than three times the number of hardbacks. huong had 162 paperbacks. how many hardback books were there?
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What is the average of 3.29 2.59 4.29 2.50?...
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