SOLUTION: Danny is older than Felicia. The difference between their ages is 3.: the sum of their ages is 37. How old is Danny?

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Question 1013142: Danny is older than Felicia. The difference between their ages is 3.: the sum of their ages is 37. How old is Danny?
Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
call their ages d and f. Then we have
d - f = 3 and
d + f = 37 Now add these and get
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2d = 40
d = 20
f = 17