) In how many months will he
he weight of 72 books is 9 kg.
1) Find the weight of 80 such books,
) How many books will weigh 6 kg?
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proportion
Step-by-step explanation:
a) 72 ------- 9
80 ------ ?
80/72×9 = 10 kg
b) 6/9×72 = 48 books
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