How do I solve this word problem?

Question

A pair of pants is on sale for 30% off. I have a coupon that lets me take an additional 20% off the sale price of an item. What is the final discount of the pair of pants I buy on sale and with my coupon? please provide an explanation.

Answer 1

100% - 30% = 70% = 0.7

100% - 20% = 80% = 0.8

the product is 0.7 * 0.8 = 0.56 = 56%

100% - 56% = 44% discount = 0.44

EX.

Suppose the pants cost $10

discount gets you 30% off, which reduces the price to $7

then applying the coupon reduces the $7 to 80% of 7 = 5.60

That is a reduction of $4.40 which is 4.4/10 = 0.44 = 44%