the weight of 56 books is 7 kg . what is the weight of 90 such books
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Weight of 56 book = 7kg
Ratio of book = ratio of weight
56/90 = 7/a
a= 90×7/56 = 90/8 = 11.25 kg
Ratio of book = ratio of weight
56/90 = 7/a
a= 90×7/56 = 90/8 = 11.25 kg
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