12. In a mathematics paper there are 10 problems. Each correct answer carries 5 marks whereas for each incorrect answer 2 marks are deducted from the marks scored. Abdul answered all the questions but got only 29 marks. Find the number of correct answers given by Abdul
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Answer:
The number of correct answers by Abdul is 7
and 3 answers was incorrect....
Step-by-step explanation:
7 × 5 = 35
and 3 answers was incorrect
therefore 3 × 2 = 6
* 35 - 6 = 29
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