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Question:

Michael needs 55 gallons of paint to paint an apartment building. He would like to purchase the paint for the least amount of money possible. Which of the following should he buy?

A eleven 5-gallon buckets at $108 each
Explaination

Determine the cost of each option. Two 25-gallon buckets doesn’t provide enough paint (2 × 25 gallons = 50 gallons). Eleven 5-gallon buckets cost: 11 × $108 = $1,188. Six 10-gallon buckets cost: 6 × $215 = $1,290. Fifty-five 1-gallon buckets cost: 55 × $23 = $1,265. The lowest price is $1,188.