SOLUTION: Chris has twice as many baseball cards as Lee. If Chris gives Lee 10 of his baseball cards, he will have half as many as Lee. How many baseball caards do Chris and Lee have togethe

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Question 579305: Chris has twice as many baseball cards as Lee. If Chris gives Lee 10 of his baseball cards, he will have half as many as Lee. How many baseball caards do Chris and Lee have together?
A) 10
B) 20
C) 30
D) 40
E) 60
I'm not sure how to approach this and solve it..
Thanks!
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
C=2L
C-10=L+10
.
C=L+20
2L=L+20
L=20
C=40
L+C=60 E
.
Ed