Answer:
cost of peach pie : 12
cost of cherry : 18
Explanation:
Edy : 7x+7y =210
Alex : 7x+10y=264
x=12 , y=18
solve: (7x+7y)-(7x+10y)=210-264
-3y=54
y=54/3=18 for cherry pie
7x+7y=210
7x+7(18)=210 ⇒ 7x=210-126 ⇒ x=84/7=12
cost of peach pie : 12
cost of cherry : 18