5:The weight of 72 books is 9 kg. What is the weight of 30 such books? in unitary method
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Answer:
weight of one book is72/9000 =125gm*30=3.750
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Answer:
3 whole 3/4 kg
Step-by-step explanation:
Weight of 72 book = 9kg
Weight of 1 book = (9/72) kg
Weight of 30 such books = (9/72 × 30) kg
= 15/4 kg
= 3 3/4kg
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