1.

The weight of 72 books is 9 kg.(a) Find the weight of 80 such books.(b) How many books will weigh 6 kg?

Answer»

72 books=9kg1 book = 9/72 kg =1/8 kg80 books = 80*1/8=10 kg

1book = 1/8 kg1kg =8 book6kg=8*6=48 books

weight of 72 books is 9 kgweight of 1 book = 72/9 kg = 8 kgweight of 80 books = 8 × 80 = 640kg

Weight of 72 📚= 9 kgWeight of such 1 📚 = 9/72= 1/8 kg80 📚 = 80*1/8 = 10 kgie) 1kg = 8 📚

6 kg = 8*6 = 48 📚



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