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MileenaKitana
05.07.2019 •
Mathematics
Randall wants to mix 50 lb of nuts worth $2 per lb with some nuts worth $7 per lb to make a mixture worth $6 per lb. how many pounds of $7 nuts must he use ?
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Ответ:
A = nuts of $2/lb
B = nuts of $7/lb
let's say we'll mix "x" lbs of B to get a mixture with A of "y" lbs, therefore
Ответ:
2 12
3 18
5 30
9 54