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It depends on why the other half are disappearing!

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11y ago
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Q: How many rolls are needed to have half the 120 dice remaining?
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How many half-dollars in a roll?

Rolls of half dollars are $10.00 so 20 coins are needed


How many dozen dinner rolls are needed to serve 150 people one roll each?

1 dozen rolls = 12 rolls Let x = the number of rolls needed. (12 rolls)(1 person / roll)x = 150 people 12x = 150 x = 12.5 However, if you can only buy dozens in whole numbers (and you can't buy half a dozen, for example), you should round up. So you would need 13 dozen dinner rolls.


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