To raise funds, a racing team sold T-shirts imprinted with the team’s logo. The team paid their supplier a one-time setup fee of $100. Because they purchased at least 50 T-shirts, the team qualified for their supplier’s quantity discount of x cents per T-shirt and paid (8-(x/100)n) dollars for each of the n T shirts they purchased. What is the value of x?

1. The team purchased 200 T-shirts, sold each T-shirt for $12, and made a $900 profit.
2. In addition to the $100 setup fee, the team paid $7 for each T-shirt.To raise funds, a racing team sold T-shirts imprinted with the team’s logo. The team paid their supplier a one-time setup fee of $100. Because they purchased at least 50 T-shirts, the team qualified for their supplier’s quantity discount of x cents per T-shirt and paid (8-(x/100)n) dollars for each of the n T shirts they purchased. What is the value of x? The team purchased 200 T-shirts, sold each T-shirt for $12, and made a $900 profit. In addition to the $100 setup fee, the team paid $7 for each T-shirt.

I marked the answer as D but the #161 – Current GMAT Prep Questions – DS Word Problems and Equations says the answer is A.

My reasoning —

Statement 1 is suf.

Statement 2 is suf – I deduce it is sufficient because the team purchase at least 50 tshirts, qualifying them for a discount , the value for which is given by

(8-(x/100)n) = 7$  Here we can assume the n to be 50 and hence arrive at the value for X.

Do let me know if this is correct!