Question

Vito is picking up coffee and pastries for his friends. At a local coffee shop, each cup of coffee costs $2.50, and each pastry costs $4.00. If he buys a total of nine items at the coffee shop and spends a total of $28.50, how many pastries does he buy?

Group of answer choices

Answer 1

Answer: He bought 4 pastries.

Explanation:

Let x = Number of cups of coffee

y= Number of pastries.

As per given,

x+y=9 ....(i)

2.5x+4y=28.50 ...(ii)

Multiply 4 to (i), we get

4x+4y=36 ...(iii)

Eliminate (ii) from (iii), we get

`1.5x=7.5\\\\\Rightarrow\ x=5`

Put x=5 in (i) , we get

5+y=9

y= 4

Hence, He bought 4 pastries.