Question

in a class test 6 marks are given for each correct answer and -2 for each incorrect answer. raghav answered all questions and got 20 marks , though he got only 10 correct. find the number of incorrect.

Answer 1

Answer:

20 questions

Step-by-step explanation:

he got 20marks

and 10 correct answer

he should get marks = 6 * 10 = 60

he got marks = 20

20-60= -40

-40÷-2= -20

hence 20 questions are incorrect