Homework Help: Math

Posted by marsha on Tuesday, January 29, 2013 at 8:48pm.

200 coins are sorted and kept 3 bags. The first bag has 20 more coins than the second bag. The second bag has twice as many coins as the third bag. How many coins are there in the third bag?

Math - Reiny, Tuesday, January 29, 2013 at 9:07pm
second bag --- x
first bag ----- x+20
third bag = 200 - (x + x+20)
= 200 - 2x - 20
= 180 - 2x

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