SOLUTION: Says Jon to billy I have 3 times as many marbles as you. Yes says billy but if you give me 20 I shall have seven times as many as you. How many marbles do each have ?

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: Says Jon to billy I have 3 times as many marbles as you. Yes says billy but if you give me 20 I shall have seven times as many as you. How many marbles do each have ?       Log On