Martha has $20 to spend on a t-shirt. She has a coupon for 20% off. The t-shirt regularly sells for $22.50 plus 10% sales tax.

Mathematics

1 answer:

rodikova [14]3 years ago

5 0

Answer:

1 and 3

Step-by-step explanation:

Step 1 is clearly elaborated. Tax is impliedd on the discounted price.

In step 3, the steps of deductions are skipped.

Like 1 + 10% = 110% and 1 - 20% = 80%

Step 2 is simply wrong. Because the percentages are implied on different values.

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