We want to prepare 5 kg of sweets for 150 CZK. We will mix cheaper candy: 1 kg for 120 CZK and more expensive candy: 1 kg per 240 CZK. How much of this two types of candy is necessary to prepare this mixture?


a =  3.75 kg
b =  1.25 kg


120a+240b = 5*150

a+b = 5
120a+240b = 750

a = 15/4 = 3.75
b = 5/4 = 1.25

Calculated by our linear equations calculator.

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