Homework Help: Math

Posted by Sky on Friday, April 22, 2011 at 1:16pm.

paint color is made using 4 drops of red and 5 drops of blue for each 5 gallons of paint. How many gallons of paint are being colored when 45 drops of color are used??

Math - MathMate, Friday, April 22, 2011 at 3:10pm
9 drops of coloured paint are used for 5 gallons of paint. Use direct proportions:

9 drops : 5 gallons
45 drop : X gallons
X=5*45/9 = ? gallons

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