Apples

A 2 kg of apples cost a certain sum of money. This sum is equal to the amount of kilograms for which we pay 72 CZK. How much is 1 kg of apples?

Result

x =  6

Solution:

2x2=72 x2=36 x1=6 x2=6 x>0 x=x1=62x^2 = 72 \ \\ x^2 = 36 \ \\ x_{ 1 } = 6 \ \\ x_{ 2 } = -6 \ \\ x>0 \ \\ x = x_{ 1 } = 6

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