Posted by carson on Sunday, October 28, 2012 at 9:37pm.
Mrs Olive gave her 4 children a sack of candy to share. Mark ate 1/2 of the candy in the sack and passed the sack to Rachel. Rachel ate 1/3 of the remaining candy and passed the sack to Fred. Fred then ate 1/4 of the candy that remained and passed the sack to Britany. Britany ate the last 12 pieces of candy. How many pieces of candy did Mark eat?

math  Steve, Monday, October 29, 2012 at 12:57am
original amount = x
mark ate x/2, leaving x/2
Rachel ate 1/3(x/2) = x/6, leaving x/3
Fred ate 1/4(x/3) = x/12, leaving x/4
Britany ate 12 = x/4
so, x=48
check
Mark ate 24, left 24
Rachel ate 8, left 16
Fred ate 4, left 12
Britany: 12
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