SOLUTION: Sam is 4 years older than sally.if sally is x years old and the sum of their ages is 40,how old are they?

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Question 1062770: Sam is 4 years older than sally.if sally is x years old and the sum of their ages is 40,how old are they?
Answer by math_helper(2461) About Me  (Show Source):
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Sally is x years old —> Sam is x+4 years old.
Also
+%28x%29+%2B+%28x%2B4%29+=+40+
++2x+%2B+4+=+40+
++2x+=+36+
+++x+=+18+ —> +x%2B4+=+18%2B4+=+22+
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Ans: Sally is +highlight%2818%29+, and Sam is highlight%2822%29 , years old
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Check:
18+22 = 40 (ok)
22 = Sam's age = 18+4 (= Sally's age + 4, so also ok)