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8 July, 19:44

How many pounds of raisins worth $1.50 per pound must be mixed with 10 pounds of peanuts worth $1.20 per pound to produce a mixture worth $1.40 per pound?

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  1. 8 July, 20:35
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    Your mixture of raisins and peanuts is worth $1.40/lb.

    You can determine the pounds of raisins from the given information by creating an equation like this:

    (lbs raisins) ($1.50/lb) + (10lbs peanuts) ($1.20/lb) = (lbs raisins + 10lbs peanuts) ($1.40/lb)

    which looks like this:

    1.5r + 12 = 1.4r + 14

    r = 20

    You need 20 lbs of raisins for your mixture.
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