Question

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.

Choose all that correctly compute the cost of the t-shirt.
Responses
A Martha takes 80% of the regular purchase price of $22.50, and then computes 110% of the reduced price.Martha takes 80% of the regular purchase price of $22.50, and then computes 110% of the reduced price.
B Martha takes 20% of $22.50 and subtracts that amount from the regular price. She finds10% of the discounted selling price and subtracts it to find the purchase amount.Martha takes 20% of $22.50 and subtracts that amount from the regular price. She finds10% of the discounted selling price and subtracts it to find the purchase amount.
C Martha takes the difference between the 20% discount and the 10% sales tax, then multiplies that by the regular price.Martha takes the difference between the 20% discount and the 10% sales tax, then multiplies that by the regular price.
D Martha takes 20% of $22.50 and subtracts that amount from the regular price. She finds 10% of the discounted selling price and adds it back to find the purchase amount.Martha takes 20% of $22.50 and subtracts that amount from the regular price. She finds 10% of the discounted selling price and adds it back to find the purchase amount.
E Martha finds 10% of the regular price and adds it to the regular price, then finds 20% of this sum and subtracts this amount from that sum.

Answer 1

B Martha takes 20% of $22.50 and subtracts that amount from the regular price. She finds 10% of the discounted selling price and subtracts it to find the purchase amount.