Question
9. A grocer wants to mix a type of spice which costs £22 per kilogram with another
type which costs £12 per kilogram, to obtain 20 kilograms of mixture which will
cost £15 per kilogram. What quantity of each spice must the grocer take?
type which costs £12 per kilogram, to obtain 20 kilograms of mixture which will
cost £15 per kilogram. What quantity of each spice must the grocer take?
Answers
let a = 22 / kg, and b = 12 / kg
a + b = 20 kg
22a + 12b = 15 * 20
12a + 12b = 240
10a = 60
a + b = 20 kg
22a + 12b = 15 * 20
12a + 12b = 240
10a = 60
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