please help me?

Question

A 720 ml container holds a mixture of red, yellow, and white paint in a 5 : 3 : 12 ratio. How much more red paint than yellow is present in the mixture?
My Answer:



20 ml.

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72 ml.

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108 ml.

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180 ml.

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200 ml.

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Answer 1

5+3+12=20

720/20=36 = 1 "unit"

for every 3 units of yellow paint there are 5 units of red therefore the difference is always 2 units (5-3=2)

2x36=72

therefore answer is 72 ml

Answer 2

The three ratio numbers add up to 20. So each ratio number contains 720/20 = 36 ml. So for red paint there are 36*5 = 180 ml in the container and for yellow paint there are 36*3 = 108 ml. There's 180-108 = 72ml more red paint then yellow paint. The answer is 72.

Answer 3

5x = Red
3x = Yellow
12x= White
20x = 720 ml
x = 36 ml
5x = 36*5 = 180 ml Red
3x = 3*36 = 108 ml Yellow
Thus 180 - 108 = 72 ml more Red than Yellow

Answer 4

108