SOLUTION: Sally is 6 years older than Donald. The 2 children have a total age of 18 years. How old is each child?

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Question 1092775: Sally is 6 years older than Donald. The 2 children have a total age of 18 years. How old is each child?
Found 2 solutions by ikleyn, josgarithmetic:
Answer by ikleyn(52788) About Me  (Show Source):
You can put this solution on YOUR website!
.
S = D + 6.           ("Sally is 6 years older than Donald")

(D + 6) + D = 18     ("The 2 children have a total age of 18 years")


=========================>  2D + 6 = 18  ====>  2D = 18-6 = 12  ====>  D = 12%2F2 = 6.


Answer.  Donald is 6 years old, Sally is 12.


Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
x, Donald's age
x+6, Sally's age

x%2B%28x%2B6%29=18