Question

Theresa's Treats sells cookies and pastries. The price of

each cookie is $2, and the price of each pastry is $3. If
Alison purchased a total of 50 cookies and pastries for
$120, how mapy pastries did she purchase?

Answer 1

20 pastries

Step-by-step explanation:

It is a system of equations.

1. write equations:

2c+3p=120

c+p=50

2. cancel out a variable

2c+3p=120

-2(c+p=50) ---------- -2c+-2p= -100

3. solve for p

p=20