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3 years ago

At CVS, the tax paid was $2.45, which was 7% of the cost. What was the cost of the items purch

Mathematics

1 answer:

UNO [17]3 years ago

8 0

'Percentage' is obtained by multiplying 2.45 by - 7%.

- 7% × 2.45 =

(- 7 ÷ 100) × 2.45 =

(- 7 × 2.45) ÷ 100 =

- 17.15 ÷ 100 =

- 0.1715 ≈

- 0.17;

<h2>How do we check the result?</h2>

If - 7% × 2.45 = - 0.1715 =>

Divide - 0.1715 by 2.45...

... And see if we get as a result: - 7%.

100/100 = 100 ÷ 100 = 100% = 1

Multiply a number by the fraction 100/100,

... and its value doesn't change.

n/100 = n%, any number.

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