If 30 Coins In Quarters And Dimes Are Worth $4.80, How Many Of Each Coin Are There?
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In this question, you know that the machine packs 
of a box every 
of a minute. Since it is constant, you simply have to double the half a minute to a full minute and then also double the rate to get 
boxes packed per minute. And 
is equal to 
Given that <span>the number of possible handshakes within a group of n people is given by the equation:
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Given that there are 105 people at a party, the number of possible handshakes is given by:
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<span>
Given that there are 105 people at a party, the number of possible handshakes is given by:
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