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liq [111]
2 years ago
5

Julie wants to make 800g of a 15% alcohol solution by mixing 20% solution and a 4% solution. How many grams of each kind does sh

e need?
If a 20% and a 4% alcohol solution weigh x g and y g respectively

solve with equation please and show steps thank you ;)
Mathematics
1 answer:
Kipish [7]2 years ago
3 0
X+y=800; 0.20x+0.04y=0.15×800=120.
y=800-x so 0.20x+0.04(800-x)=120.
0.20x+32-0.04x=120.
0.16x=88 and x=88/0.16=550g making y=250g.
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8 hours

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2 years ago
The vertex angle of an isosceles triangle is 10 less than three times the base angles. Find each angle of the triangle.
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1 year ago
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SVEN [57.7K]
  1. Mr. Anderson drove 168 miles in 3.5 hours. Distance here is 168 miles.
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Since we are looking for distance, we have to convert the 2nd part (which is the speed) to dostance.

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