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In a test there are total n questions. B...

In a test there are total n questions. Bhanu answers 20 out of 25 questions correctly in the first section. In the second section he answers `60%` question correct and thus his total score is `66.66%` in the test. Given that all the questions carry equal marks, without any negative marking. The total no. of question in the test is :

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Total questions in section 2=`n-25` questios
he gave 60%correct answers=>`60/100 xx (n-25)=3/5n-15`
=>`66.66% of n=3/5n-15+20`
=>`6666/10000n-3/5n=5`
=>n=75 questions.
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