Skylar needs to buy a pair of dress pants for $40, a shirt for $30, and a tie for $20. Skylar has three coupons. The first coupo
n gives him x percent off on a shirt. The second coupon gives him y percent off on the dress pants. The third coupon gives him z percent off on his total purchase. He cannot combine the coupon for the total purchase with the other two coupons. These expressions give both possibilities for the total cost of Skylar's purchase after the coupons are applied. The variables represent percentages as decimals. (1−x)30+(1−y)40+20 (1−z)(40+30+20) Which part of the expression represents the percent that Skylar will pay for the dress pants if he uses the dress pants coupon?
The expression is given as (1−x)30+(1−y)40+20 (1−z)(40+30+20). This expression represents the total cost of Skylar's purchase after the coupons are applied. From the problem statement, a pair of dress pants is $40. So, the part in the expression that represents the percent that Skylar will pay for the dress pants would be the (1-y)40.
