Find the answer..From above pic ch 3 math cls 10 – InterviewSolution

1.	Find the answer..From above pic ch 3 math cls 10
Answer» :-Let number of correct answers be x and number of incorrect answers be y. As per given conditions, 3x - y = 40 … (1) 4x - 2y = 50 … (2) (1) 2 6X - 2y = 80 … (3) SUBTRACTING (2) from (3), we get, 2x = 30 x = 15 y = 3x - 40 = 45 - 40 = 5 Total number of questions in the test = 15 + 5 = 20 Hope it HELPS you.

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