Answer:
price of hotdog = $1
price of drink = $0.5
Step-by-step explanation:
let the price of hotdogs be x
let the price of drinks be y
10x + 5y = 12.50 ------- 1st eq
7x + 4y = 9 -------------- 2nd eq
10x + 5y = 12.50 ------------ ×4
7x + 4y = 9 -------------------- ×5
40x + 20y = 50
(-)35x + (-)20y = (-)45
------------------------
5x = 5
x = 1
put the value of x in any of the prior eq.
(7)(1) + 4y = 9
4y = 9-7
y = 2/4
y = 1/2
answer:
price of hotdog = $1
price of drink = $0.5
