Posted by Iby on Saturday, October 23, 2010 at 7:41am.
The sum of the ages of the six family members is 150. You get that from the average and the fact that there are six of them. The sum of the ages of the four children is 60.
Let x be the mother's age. The father's age is x+2.
You know that 60 + x + x + 2 = 160
Solve for x.
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