Suppose you got 8 mangoes and 3 apples for $18 and 3 mangoes and 5 apples for $14.50.
How would you write a formula to find out how much each apple and mango cost?
let x = cost of mango y = c of apples 8x+3y=18. 3x+5y=14.5
24x+9y=54 24x+40y=116 multiplying them with 3 and 8 resectively. subtract one from the other we get 40y-9y=116-54 31y=62 y=2. cost of apple=2$ per apple 8x+3y=18, 8x+3(2)=18. 8x=12. x=12/8=1.5 cost of mango i= 1.5 $ per mango hope this helps
