Question

in the competition 5 marks are given for every correct answer and -2 for every incorrect answer karan got 4 correct answer if he scored -12 marks in the competition how many question he answered correctly?? step by step write the answer

Answer 1

Answer:

Step-by-step explanation:

karan got 4 correct

marks for one correct question = 5

∴ total marks = 5×4 = 20

∴ let us assume the answer he got wrong as 2x

∴ 20 -2x = -12

-2x=-12 -20

-2x = -32

x = $\frac{-32}{-2\\}$

x = 8

∴Karan got 8 answer incorrect