Question

Veena took an objective type examination in

which there are 50 questions. If student answer

correctly, 4 Marks will be given and if answer

incorrectly 1 mark will be deducted. If Veena

answered all the questions and had achieved 80

marks. Find the number of questions which has

correct answers and incorrect answers given by

Veena?​

Answer 1

Answer:

the no. of correct answers are 26

and incorrect answers are 24

Step-by-step explanation:

let the correct answers be = A

then incorrect answers are = 50 - A

Now according to question equation will be:

(4*A) - (50 - A) = 80

=> 4A - 50 + A = 80

=> 5A = 80 + 50

=> A = 130/5

=> A = 26

So, the no. of correct answers are 26

and incorrect answers are (50 - A)=(50 - 26) = 24