Question

in a test with 75 ,2 points were dedicated for each wrong answer and 3 points were added for every correct answer how many were answered correctly if the score was zero​

Answer 1

Answer:

50

Step-by-step explanation:

Let no. of correct answers be c

Let no. of wrong answers be w

ATQ, 3c- 2w = 0

and total questions are 75, therefore

c+ w = 75

w = 75 - c

Putting value of w in 1st equation

3c - 2(75- c) = 0

3c - 50 - 2c = 0

c- 50 = 0

c = 50

therefore no. of correct answers is 50