Sweets

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?

Correct result:

a =  3.75 kg
b =  1.25 kg

Solution:


a+b=5
120a+240b = 5•150

a+b=5
120•a+240•b = 5•150

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

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

Our linear equations calculator calculates it.



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