SOLUTION: Edward makes his own lolly bags to give away at a party. He mixes jelly fruits costing S9 per kilogram and chocolate buttons costing S12 per kilogram. How many kilograms of each lo

Algebra ->  Linear-equations -> SOLUTION: Edward makes his own lolly bags to give away at a party. He mixes jelly fruits costing S9 per kilogram and chocolate buttons costing S12 per kilogram. How many kilograms of each lo      Log On


   

Question 1167483: Edward makes his own lolly bags to give away at a party. He mixes jelly fruits costing S9 per kilogram and chocolate buttons costing S12 per kilogram. How many kilograms of each lolly does Edward mix if he produces 15 kg of lolly bags costing $11.20 per kilogram?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
x of the S9 jelly fruits
15-x of the S12 chocolate buttons

9x%2B12%2815-x%29=11.2%2A15
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9x-12x%2B%2812%29%2815%29=%2811.2%29%2815%29
12x-9x-%2812%29%2815%29=-%2811.2%29%2815%29
%2812-9%29x=%2812%29%2815%29-%2811.2%29%2815%29
highlight%28x=15%28%2812-11.2%29%2F%2812-9%29%29%29
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