GMAT Problem Solving (PS) | Re: During the first week of September, a shoe retailer sold 10 pairs of a

During the first week of September, a shoe retailer sold 10 pairs of a certain style of oxfords at $ 35 a pair. If, during the second week of September, 15 pairs were sold at the sale price of $ 27.50 a pair, by what amount did the revenue from weekly sales of these oxfords increase during the second week?


A) $ 62.50
B) $ 75.00
C) $ 112.50
D) $ 137.50
E) $ 175.00