Mac has £ 3 more than Ken, but then Ken wins on the horses and trebles his money, so that he now has £ 2 more than the original amount of money that the two boys had between them. How much money did Mac and Ken have between them before Ken's win ? Choose the correct choice from the following answers: A) 22 B) 27 C) 13 D) 55 E) 11
Let money with Ken = x. Then, money with Mac = x + £ 3.   Now, 3x = (x + x + £ 3) + £ 2 x = £ 5.   Therefore Total money with Mac and Ken = 2x + £ 3 = £ 13.   Answer: 13
<result>C</result>
Mac has £ 3 more than Ken, but then Ken wins on the horses and trebles his money, so that he now has £ 2 more than the original amount of money that the two boys had between them. How much money did Mac and Ken have between them before Ken's win ?