SOLUTION: phylis is 3 times as old as her dog. If the sum of their ages is 42, how old is phylis and her dog?

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Question 1157652: phylis is 3 times as old as her dog. If the sum of their ages is 42, how old is phylis and her dog?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let the dog's age = +x+
+3x+ = Phylis's age
given:
+3x+%2B+x+=+42+
+4x+=+42+
+x+=+21%2F2+
+x+=+10.5+
and
+3x+=+31.5+
The dog is 10.5 yrs old
Phylis is 31.5 yrs old
-----------------------------
check:
+4x+=+42+
+4%2A10.5+=+42+
+42+=+42+
OK