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Kylie made a rock garden for her father. She used 1.5 pounds of pebbles, 0.7 pounds of planting medium, and 1.4 pounds of decorative rocks in her garden. The pebbles cost $1.62 per pound, the planting medium cost $0.42 per pound, and the rocks cost $0.72 per pound. She also spent $7.36 on plants for the garden. How much did she spend in all to make the rock garden?
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Kevin and Justin worked at a nursery to earn money for their Father's Day gifts. They were paid $5.60 per hour. Kevin worked for nine hours the first week, eight hours the second week, and ten hours the third week. Justin worked fourteen hours the first week, eleven hours the second week, and seventeen hours the third week. How much more did Justin earn than Kevin?
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