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If 75% students of a class answered the first question in a test correctly, 55% answered the second question correctly and 20% answered neither of the questions correctly, what percent answered both the questions correctly?

Correct Answer: 50
Hints: ধরি, উভয় প্রশ্নের সঠিক উত্তর দেওয়া x জন। 100% = 75% + 55% - x + 20% x = 150% - 100% x = 50%

If 75 percent of a class answered the first question on a certain test correctly, 55 percent answered the second question on the test correctly, and 20 percent answered neither of the questions correctly, what percent answered both correctly?

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