Mensa-Level IQ Test
Liza, Isabella, and Kyle decide to split a bag of marbles. Liza takes half of the total. Isabella then takes a third of the remaining marbles. Kyle takes the last 20 marbles. How many marbles were in the bag initially?
50%
Liza, Isabella, and Kyle decide to split a bag of marbles. Liza takes half of the total. Isabella then takes a third of the remaining marbles. Kyle takes the last 20 marbles. How many marbles were in the bag initially?
60
80
90
120
50%
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