# Mr. John

Mr. John wants to buy winter apples Spartan. There are two ways to buy:

1) buy apples at the marketplace, where 1 kg costs 15 CZK.
2) Bring the car to the agricultural farm, where the apples are sold after 9 CZK per kilogram. However, he must pay CZK 150 for car gasoline.

How many kilograms of apples would have Mr. John buy that for him to be more cost-effective to drive to the agricultural farm?

Result

x =  25 kg

#### Solution:

15x = 9x+150

6x = 150

x = 25

Calculated by our simple equation calculator.

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#### To solve this example are needed these knowledge from mathematics:

Do you want to convert mass units? Do you have a linear equation or system of equations and looking for its solution? Or do you have quadratic equation?

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