math
posted by May .
Peter has twice many stickers as Ali. Ali has 40 more stickers than Carlos. They have 300 stickers altogether. How many stickers does Peter have?

Let c be the number of stickers that Carlos has.
c + c + 40 + 2c + 40 = 300
4c = 220
c = 55 
That's not right. c does not equal 55.
Peter  2 x c
Ali  Has c + another 40
Carlos  c
(2c) + (c + 40) + (c)
= 4c + 40 = 300
= 4c = 30040
= 4c = 260
= 4c / 4 = 260 / 4
= 0 = 65
c = 65
Feel free to correct me if I'm wrong.
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