Question 1167243
Karen's age = k
Jeff's age = j
<pr>
5j + 3k = 92
k = j + 4
<pr>
5j + 3k = 92
-j + k = 4
<pr>
Multiply second equation by 5:
<pr>
5j + 3k = 92
-5j + 5k = 20
<pr>
Add both equations together and solve for k:
<pr>
8k = 112
<pr>
k = 14
<pr>
Karen's age = k = <b>14</b>