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Let be the amount (gal) of the 40% slime solution you end up using. You want to end up with 120 gal of the 50% solution, so that you would use
gal of the 70% solution.
You want the final solution to consist of 50% slime, or 60 gal of slime. Each gal of the 40% solution contributes 0.4 gal of slime, while each gal of the 70% solution contributes 0.7 gal of slime. This means
so the answer is B.
John's gross monthly salary is $2000.
John receives a 15% raise in his salary.
So first we have to find 15% of $2000.
15% of 2000 =
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=
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John's salary including the raise = $ = $2300.
Now 30% of his monthly paycheck withheld for taxes.
30% of 2300 =
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=
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So the amount of tax deducted = $690.
John's net monthly income = $ = $1610.
So we have got the required answer.