The weight of 72 books is 9kg a) What is the weight of 80 such books? b) How many such books weigh 6 kg?
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Answer:
a 640kg
Step-by-step explanation:
b kg
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Weight of 72 books = 9kg
Weight of 1 book = 9/72
= 1/8
= 0.125kg
= 125 grams
(a) Weight of 80 books = 80×125
= 10000 grams
= 10 kg.
(b) No. of books that weight 6 kg = 6/0.125
= 48 books
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