Problema Solution
A man goes into a supermarket, and pays $14.40 for two cake mixes and three cans of icing. Shortly thereafter, a woman buys three cake mixes and five cans of icing for $22.80. How much does the cake mix cost?
Answer provided by our tutors
let
x = the cost of cake mix
y = the cost of can of icing
$14.40 for two cake mixes and three cans of icing
2x + 3y = 14.40
three cake mixes and five cans of icing for $22.80
3x + 5y = 22.80
by solving the system of equations
2x + 3y = 14.40
3x + 5y = 22.80
we find
x = $3.6
y = $2.4
click here to see the step by step solution of the system of equations
the cake mix costs $3.6.