In a test,+3 are given for every correct answer and -1 marks are for every incorrect answer. sona attempted all the questions and scored +20 marks though she got 10 correct answers. how many answers has she attempted? how many questions were given in the test ?
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20 questions were given in the test
(Usne 20 question kre jisme 10 correct kre uske +30 mile aur 10 incorrect kiye uske -10)
(Usne 20 question kre jisme 10 correct kre uske +30 mile aur 10 incorrect kiye uske -10)
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