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 these two types of candy is necessary to prepare this mixture?

Correct answer:

a =  3.75 kg
b =  1.25 kg

Step-by-step explanation:

a+b=5 120a+240b=5 150  a+b=5 120 a+240 b=5 150  a+b=5 120a+240b=750  a=415=3.75=3.75 kg b=45=1.25



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