Mathematics
Zelonis510
7

Kevin is 3 times as old as Daniel. 4 years ago, Kevin was 5 times as old as Daniel. How old is Kevin now?

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(1) Answers
jordanlacy13

X is Kevin; Y is Dan X = 3Y X - 4 = 5(Y - 4) 3Y - 4 = 5(Y - 4)    3Y - 4 = 5Y - 20      + 4         +4 4 cancels each other out.      3Y = 5Y - 16      - 5   -5 5 cancels each other out.     -2Y = -16       /2       /2             Y = 8  X = 3Y;     X = 3 x 8; Thus, X = 24; Kevin(x) is 24

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