At the movie theatre each popcorn costs $4.50 and each cola costs $2.50. Mr.P Purchased 15 items. He spent total of $57.50. How many colas did Mr.P purchase

Question

I don’t understand the question and I need help!

Answer 1

P is the number of popcorn

C is the number of colas

 

P + C = 15 <---- he purchased 15 items

C = 15 - P

 

450P + 250C = 5750 <---- amount in pennies to clear away the decimals

 

450P + 250(15 - P) = 5750

 

450P + 3750 - 250P = 5750

 

200P + 3750 = 5750

 

200P = 5750 - 3750

 

200P = 2000

 

P=10

 

10 popcorns

5 colas

 

10(4.50) + 5(2.50) =

45 + 12.50 =

57.50

so the answers in bold are correct