A waitress's income consists of her salary and tips.During one week ,her tips were 9/4 of her salary.What fraction of her income for the week came from tips? Choose the correct choice from the following answers:
A) 9 / 13	B) 1 / 6	C) 1 / 3	D) 4 / 9	E) 5 / 9

Rationale: her tips were 9 / 4 of her salary . let ' s say her salary = $ 4 this mean her tips = ( 9 / 4 ) ( $ 4 ) = $ 9 so , her total income = $ 4 + $ 9 = $ 13 what fraction of her income for the week came from tips $ 9 $ 13 = 9 / 13 = a
Answer: A