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The weight of 65 books is 13 kg. a. Wh...

The weight of 65 books is 13 kg.
a. What is the weight of 80 such books?
b. How many such books weigh 6.4 kg?

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The correct Answer is:
16 kg, 32
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RS AGGARWAL-RATIO, PROPORTION AND UNITARY METHOD-EXERCISE 10C
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