SterlingD380592 SterlingD380592

30-10-2022
Mathematics

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How many gallons of a 50% antifreeze solution must be mixed with 90 gallons of 15% antifreeze? Use the six-step method.

How many gallons of a 50 antifreeze solution must be mixed with 90 gallons of 15 antifreeze Use the sixstep method class=

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DainaH489161 DainaH489161

30-10-2022

Let

x -----> number of gallons of a 50% antifreeze

we have that

0.50(x)+0.15(90)=0.40(x+90)

Solve for x

0.50x+13.5=0.40x+36

0.50x-0.40x=36-13.5

0.10x=22.5

x=225

therefore

The answer is 225 gallons of a 50% antifreeze

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