You buy a container of cat litter for $11.50 and a bag of cat food for x dollars. The total purchase is $16.80, which includes 5% sales tax. Write and solve an equation to find the cost of the cat food.

Question

Mathematics

Cannon

14 April, 05:40

You buy a container of cat litter for $11.50 and a bag of cat food for x dollars. The total purchase is $16.80, which includes 5% sales tax. Write and solve an equation to find the cost of the cat food.

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Answers (1)

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Nash Watson · Answer 1

let cat food = x

total plus 5% = 105% = 1.05

1.05 * (11.50 + X) = 16.80

12.075 + 1.05x = 16.80

1.05x = 16.80-12.075

1.05x = 4.725

x = 4.725 / 1.05

x = 4.50

the cat food cost $4.50

11.50 + 4.50 = 16.00

16.00 * 0.05 = 0.80

16.00 + 0.80 = 16.80