Mathematics: Rose went on a shopping trip to Richmond. She purchased a calculator originally priced at $100 but discounted 80%. If sales tax in Richmond is 15%, what was the total cost? $

Rose went on a shopping trip to Richmond. She purchased

ethanyayger

17.03.2022

The total cost is $\$23$ .

Step-by-step explanation:

Given: Original price of calculator is $\$100$ , discount is $80\%$ and the sales tax is $15\%$ .

To find: The total cost

Solution:

We have,

Original price of calculator $=\$100$

Discount $=80\%$

Sales tax $=15\%$

Now, first we need to find the cost after applying the discount.

So, discount $=\frac{80}{100}\times100=\$80$

Therefore, the cost after applying the discount

$=\$100-\$80=\$20$

Now, we have to find the sales tax. Therefore,

Sales tax $=\frac{15}{100}\times20=\$3$

So, the total cost is $\$20+\$3=\$23$ .

Hence, the total cost is $\$23$ .

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