In order to get a certain shade of blue paint, a mixer must have 5 parts white paint to 3 parts blue. If 4 gallons of paint must be mixed, how many gallons of white paint must be used? 3.7 gallons 2.5 gallons 1.9 gallons 1.5 gallons
Mathematics · Middle School · Sun Jan 24 2021
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In order to get a certain shade of blue paint, a mixer must have 5 parts white paint to 3 parts blue.
Total paint was mixed = 4 gallons.
5 parts white + 3 parts blue = 8 parts
divide it into 8 parts to get each part must be = 4 ÷ 8 = 0.5 gallons
It is given that 5 parts of white paint = 5 × 0.5 = 2.5 gallons
and 3 parts of blue paint was mixed = 3 × 0.5 = 1.5 gallons
Option B. 2.5 gallons of white paint must be used.