Question

In an exam (+2) marks are given for every correct answer and (-0.5) marks is given for every wrong answer and O for now attempting any question
1-: Sita scores 30 marks. If she got 20 correct answers, how many questions she has attempted incorrectly? 2-: Diya scores -4 marks if she got 3 correct answers. How many were incorrect?

Answer 1

Answer:

1-Sita has attempted 20 questions wrong

2- Divya has attempted 20 question wrong.

Step-by-step explanation:

Sita-

T.M=30

Number from correct answers=20×2=40

Negative marks=40-30=10

x×-0.5=-10(x= no. of wrong questions)

x=20

Divya-

T.M=-4

No.from correct questions=3×2=6

negative marks=6-(-4)=6+4=10

x×-0.5=-10(x= no. of wrong questions)

x=20

Hope it helps...