# Math test

Obelix filled a mathematical test in which he answered 25 questions. For every correct answer, he received 5 points, for each bad answer he had 3 points deducted. Obelix gained 36% of all points in the test. How many questions did he solve correctly?

Result

n =  15

#### Solution:

5n - 3(25-n) = 0.36 * 25*5

8n = 120

n = 15

Calculated by our simple equation calculator.

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

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