Question

HURRY

Susan has two dogs named Murphy and Fido. She feeds each of them the same type of dog food. Murphy eats 2/3 of a can of dog food each day. Fido eats 1/2 of a can of dog food each day. Each can of dog food costs $1.75. The pet store is offering a sale that allows customers to buy one can of food and get one free. Susan wants to buy a 60-day supply of dog food during the sale. To the nearest cent, what would be the cost of Susan's dog food purchase before tax?

Answer 1

$61.25

Explanation:

The quantity for a 60-day supply is 60 times the 1-day usage. The BOGO offer means the sale price is effectively half the usual price.

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One day supply: 2/3 can + 1/2 can = (4/6 +3/6) = 7/6 can

60-day supply: 60 × 7/6 can = 70 cans

Susan will be paying for 70/2 = 35 cans of dog food. (She will get 35 cans free.) So, her cost will be ...

35 × $1.75 = $61.25

The cost of Susan's dog food purchase would be $61.25 before tax.