SOLUTION: an oriental rug is 52 years old and a persian rug is 16 years old. how many years ago was the oriental rug 4 times as old as the persian rug?

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Question 686588: an oriental rug is 52 years old and a persian rug is 16 years old. how many years ago was the oriental rug 4 times as old as the persian rug?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +n+ = number of years ago that the
oriental rug 4 times as old as the persian rug
given:
+52+-+n+=+4%2A%28+16+-+n+%29+
+52+-+n+=+64+-+4n+
+3n+=+64+-+52+
+3n+=+12+
+n+=+4+
4 years ago, the oriental rug was 4 times as old as the persian rug
check:
+52+-+n+=+4%2A%28+16+-+n+%29+
+52+-+4+=+48+
+16+-+4+=+12+
+48+=+4%2A12+
+48+=+48+
OK