Posted by **JESSICA** on Monday, December 6, 2010 at 11:04am.

Allen started out with x marbles. He doubled his number of marbles by buying an additional x marbles from Betty. Then he gave away one-third of all his marbles to his friend Clarence. At the end of the day, he had 16 marbles. How many marbles did he start out with

- MATH -
**Reiny**, Monday, December 6, 2010 at 11:32am
start --- x

after Betty deal --- 2x

after give-away ---- (2/3)(2x)

(4/3)x = 16

4x = 48

x = 12

check:

start: 12

after doubling : 24

gave (1/3) of 24 or 8 away

leaving him with 16

- MATH -
**JESSICA**, Monday, December 6, 2010 at 6:18pm
SO HE STARTED OUT WITH 12?

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