Question

Chelsea and Matt are selling cheesecakes for a school fundraiser. Customers can buy New York style
cheesecakes and strawberry cheesecakes. Chelsea sold 2 New York style cheesecakes and 2 strawberry
cheesecakes for a total of $62. Matt sold 6 New York style cheesecakes and 2 strawberry cheesecakes
for a total of $122. Find the cost each of one New York style cheesecake and one strawberry
cheesecake.

Answer 1

set a system of equations:
x:price of one new tork style
y:price of one strawberry
2x+2y=63
6x+2y=122
solve..

Answer 2

thank you

Answer 3

but there is principle or formula for these type of questions or not?!