Posted by May on Wednesday, February 13, 2013 at 5:06pm.
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?

math  Ms. Sue, Wednesday, February 13, 2013 at 5:13pm
Let c be the number of stickers that Carlos has.
c + c + 40 + 2c + 40 = 300
4c = 220
c = 55

math  Mrt Mose, Friday, October 30, 2015 at 11:59pm
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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