A shoe costs a cobbler $400. He sells it for $520. What percentage of profit did he earn?

A shoe costs a cobbler $400. He sells it for $520. What percentage of

1.	A shoe costs a cobbler $400. He sells it for $520. What percentage of profit did he earn?
A.	0.25
B.	0.3
C.	0.35
D.	0.45
Answer» C. 0.35