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of copper and zinc in an alloy is 7:5. If the w3.30 kg, find the weight of zinc in it.of the income and savings of a family is 9:2. |
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Answer» copper ratio=7copper weight=3.30kgzinc ratio=5zinc weig ht=?7/5=3.30/?5×3.30=7×?5×3.30/7=?16.5/7=? 2.35=? zinc weight =2.35 kg16. |
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