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Math·Advanced Math·Nonlinear equations in one variable and systems of equations in two variables

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An online store is offering two different discounts on its sweaters: a bulk discount for large orders and a coupon discount. For orders of $n$ sweaters, where $10<n<50$, a bulk discount of $n\%$ off the original price of $\$41$ is applied to the price of each sweater. If a coupon is applied to the order, an additional discount of $\$4$ is applied to the price of each sweater, after the bulk discount is applied. For a certain order with both the bulk discount and the coupon discount applied, the total price after the discounts for the sweaters purchased was $\$741$. How many sweaters were purchased in this order?

A

18

B

20

C

30

D

44