SOLUTION: harry is 6 times as old as his son charlie. in 6 years he will only be four times as old as his son. how old is charlie now?

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Question 573687: harry is 6 times as old as his son charlie. in 6 years he will only be four times as old as his son. how old is charlie now?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +h+ = Harry's age now
Let +c+ = Charlie's age now
given:
(1) +h+=+6c+
(2) +h+%2B+6+=+4%2A%28+c+%2B+6+%29+
--------------------
Substitute (1) into (2)
(2) +6c+%2B+6+=+4c+%2B+24+
(2) +2c+=+24+-+6+
(2) +2c+=+18+
(2) +c+=+9+
and
(1) +h+=+6c+
(1) +h+=+6%2A9+
(1) +h+=54+
Harry is 54 and Charlie is 9
check:
(2) +h+%2B+6+=+4%2A%28+c+%2B+6+%29+
(2) +54+%2B+6+=+4%2A%28+9+%2B+6+%29+
(2) +60+=+4%2A15+
(2) +60+=+60+
OK