A waiter's salary consists of his salary and tips. During one week his tips were 5/2 of his salary. What fraction of his income came from tips ?  Choose the correct choice from the following choices.
A) 4/9 B) 5/4 C) 5/8 D) 5/7 E) 6/9
Income = salary (s) +tips = s + s*5/2 = s*7/2   Tips = s*7/2   fraction of his income came from tips = (s*5/2)/(s*7/2)= 5/7   ANSWER:5/7
<result>D</result>
A waiter's salary consists of his salary and tips. During one week his tips were 5/2 of his salary. What fraction of his income came from tips ?