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14. The weight of 65 books is 13 kg(i) What is the weight of 80 such books?(il) How many such books weigh 6.4 kg? |
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Answer» weight of 65 books = 13kgwieght of 1 book = 65 ÷ 13 =5 weight of 1 book is 5 so,weight of 80 books = 80 × 5 weight of 80 books = 400kg no.of books weighing 6.4 kg = 6.4 × 5 = 32 |
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