Question

1. a book decreases from $16 to $12. what is the percent decrease?
2. a $50 jacket is on sale for 20% off. a) discount amount: b) sale price:

Explanation:

Step1: Solve part a) - Discount amount

To find the discount amount, we use the formula: Discount amount = Original price × Discount rate. The original price is $50 and the discount rate is 20% or 0.20 in decimal form. So, we calculate $50 × 0.20.
$50\times0.20 = 10$

Step2: Solve part b) - Sale price

To find the sale price, we subtract the discount amount from the original price. We found the discount amount is $10 in step 1, and the original price is $50. So, Sale price = Original price - Discount amount.
$50 - 10 = 40$

Answer:

a) The discount amount is $\$10$.
b) The sale price is $\$40$.