Saturday

April 19, 2014

April 19, 2014

Posted by **Katherine** on Monday, January 28, 2013 at 10:29pm.

- Algebra -
**Zoe**, Monday, January 28, 2013 at 10:42pmI just guessed and checked for this one, but the answer is Karen will be 18, and Susan will be 27.

- Algebra -
**PsyDAG**, Tuesday, January 29, 2013 at 11:41amProcess: Let S = Susan's current age and K = Karen's

S = K + 9

2/3(S + 10) = K + 10

Substitute K+9 for S in second equation and solve for K. Insert that value into the first equation and solve for S. Check by inserting both values into the second equation. Add 10 to each age.

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