Final answer:
To find the total purchase amount after applying a 25% discount on a $50 purchase followed by a reduction of $20, calculate 25% of $50, subtract it from $50, and then subtract an additional $20. The final total purchase amount is $17.50.
Step-by-step explanation:
To calculate the total purchase amount after a coupon of 25% off and then a $20 reduction, follow these steps:
- Apply the 25% discount to the initial $50 purchase to find the discounted amount. This is calculated by multiplying $50 by 25% (or 0.25).
- Subtract the result from the original $50 to get the amount after discount.
- Subtract an additional $20 from the discounted price to find the final total purchase amount.
Let's do the math:
- 25% of $50 = $50 * 0.25 = $12.50
- $50 - $12.50 = $37.50 (amount after discount)
- $37.50 - $20 = $17.50 (final total purchase amount)