What is the cost complement for Adams Stationery?

Calculation of Merchandise Available for Sale:

Cost Method – Beginning inventory = $75,000; Net purchases = $60,000; Transportation = $1,500; Total merchandise available for sale = $136,500.

Retail Method – Beginning inventory = $200,000; Net purchases = $55,000; Additional markups = $10,000; Total merchandise available for sale = $265,000.

a. 0.375
b. 0.471
c. 0.477
d. 0.515