SOLUTION: the weight of 90 books is 50 kg find the weight of 180 such books

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Question 722558: the weight of 90 books is 50 kg find the weight of 180 such books
Answer by god2012(113) About Me  (Show Source):
You can put this solution on YOUR website!
Solution:
90 books weigh -------- 50kg
180 books weigh ------ 180 * 50 / 90 = 100 kg