SOLUTION: Daniel is 36 years older than Tiffany. Daniel and Tiffany first met 3 years ago. Seven years ago, Daniel was 5 times as old as Tiffany. How old is Daniel now?

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Question 854960: Daniel is 36 years older than Tiffany. Daniel and Tiffany first met 3 years ago. Seven years ago, Daniel was 5 times as old as Tiffany.
How old is Daniel now?

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
(1) +d+=+t+%2B+36+
(2) +d+-+7+=+5%2A%28+t+-+7+%29+
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Substitute (1) into (2)
(2) +t+%2B+36+-+7+=+5%2A%28+t+-+7+%29+
(2) +t+%2B+36+-+7+=+5t+-+35+
(2) +4t+=+29+%2B+35+
(2) +4t+=+64+
(2) +t+=+16+
and
+d+=+t+%2B+36+
+d+=+16+%2B+36+
+d+=+52+
Daniel is 52
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check:
(2) +d+-+7+=+5%2A%28+t+-+7+%29+
(2) +52+-+7+=+5%2A%28+16+-+7+%29+
(2) +45+=+5%2A9+
(2) +45+=+45+
OK