SOLUTION: The sum of the ages of Tom and his daughter Sarah is 58. In one year’s time, Tom will be 3 times Sarah’s age. How old is Sarah now? Let Sarah’s age be s, and Tom’s age be t.

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Question 1123680: The sum of the ages of Tom and his daughter Sarah is 58. In one year’s time, Tom will be 3 times Sarah’s age. How old is Sarah now? Let Sarah’s age be s, and Tom’s age be t.
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
(1) +s+%2B+t+=+58+
(2) +t+%2B+1+=+3%2A%28+s+%2B+1+%29+
———————————————-
(2) +t+%2B+1+=+3s+%2B+3+
(2) +3s+-+t+=+-2+
Add (1) and (2)
+4s+=+56+
+s+=+14+
And
(1) +14+%2B+t+=+58+
(1) +t+=+44+
Sarah is 14 now
—————————-
Check:
(2) +t+%2B+1+=+3%2A%28+s+%2B+1+%29+
(2) +44+%2B+1+=+3%2A15+
(2) +45+=+45+
OK