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Mary wants to buy one large pizza, one medium pizza, and three drinks. The drinks cost p dollars each, the medium pizza costs two times as much as one drink, and the large pizza costs three times as much as one drink. If Mary started with 30 dollars, how much money would she have left after making all of her purchases? Give your answer as an expression of p.

 May 25, 2015

Best Answer 

 #1
avatar+129852 
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1 Drink = p

3 Drinks = 3p

Medium Pizza = 2 x the cost of 1 drink  = 2p

Large Pizza = 3 x the cost of 1 drink = 3p

 

So.....assuming that she bought 3 drinks and both pizza types, she would have

 

30 - (3p + 2p + 3p) =    $ [ 30 - 8p  ]  left

 

 

 May 25, 2015
 #1
avatar+129852 
+5
Best Answer

1 Drink = p

3 Drinks = 3p

Medium Pizza = 2 x the cost of 1 drink  = 2p

Large Pizza = 3 x the cost of 1 drink = 3p

 

So.....assuming that she bought 3 drinks and both pizza types, she would have

 

30 - (3p + 2p + 3p) =    $ [ 30 - 8p  ]  left

 

 

CPhill May 25, 2015

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