SOLUTION: Loli is 20 years older than pop.In 10 years loliwill be twice as old as pop .how old is each now

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Question 1015251: Loli is 20 years older than pop.In 10 years loliwill be twice as old as pop .how old is each now
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +L+ = Loli's age now
Let +P+ = Pop's age now
-----------------------
(1) +L+=+P+%2B+20+
(2) +L+%2B+10+=+2%2A%28+P+%2B+10+%29+
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Substitute (1) into (2)
(2) +P+%2B+20+%2B+10+=+2%2A%28+P+%2B+10+%29+
(2) +P+%2B+30+=+2P+%2B+20+
(2) +P+=+10+
and
(1) +L+=+P+%2B+20+
(1) +L+=+10+%2B+20+
(1) +L+=+30+
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Loli is 30 now
Pop is 10 now
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check:
(2) +L+%2B+10+=+2%2A%28+P+%2B+10+%29+
(2) +30+%2B+10+=+2%2A%28+10+%2B+10+%29+
(2) +40+=+2%2A20+
(2) +40+=+40+
OK