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180 books have mass 30kg find mass of 150 such books
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Reiny
180 books have mass 30kg
1 book has a mass of 30/180 or 1/6 kg
so 150 books have a mass of (1/6)(150) kg or ....
or , using simple proportion:
x/150 = 30/180
x = 30(150)/180) =
1 book has a mass of 30/180 or 1/6 kg
so 150 books have a mass of (1/6)(150) kg or ....
or , using simple proportion:
x/150 = 30/180
x = 30(150)/180) =
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