Question

In a test containing 18 questions 5 marks are given for the correct answer and -2 marks are given for incorrect answer. Find if gaurav got -1 mark then how many correct and incorrect answer did he gave

Answer 1

Answer:

5, 14

Step-by-step explanation:

Let the number of correctly answered questions be x and nunnery if wrongly answered questions be y

Therefore, from first condition,

x + y = 18

From second condition,

5x - 2y = -1

Therefore, on equating the equations, we get

x = 5, y = 13

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