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Sneha scored 50 marks in a test, getting...

Sneha scored 50 marks in a test, getting 3 marks for each right answer and losing 2 marks for each wrong answer. Had 5 marks been awarded for each correct answer and 4 marks been deducted for each incorrect answer, then Sneha would have scored 70 marks. How many questions werew there in the test?

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BEYOND PUBLICATION-PAIR OF LINEAR EQUATIONS IN TWO VARIABLES-EXERCISE
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