Question

In a class test containing $10$ questions, '$3$' marks are awarded for every correct answer and $(-1)$ mark is for every incorrect answer and '$0$' for questions not attempted.
(i) Gopi gets $5$ correct and $5$ incorrect answers. What is his score?
(ii) Reshma gets $7$ correct answer and $3$ incorrect answers. What is her score?
(iii) Reshma gets $3$ correct and $4$ incorrect answers out of seven questions she attempts. What is her score?

Answer 1

i) Gopi gets $5$ correct and $5$ incorrect answers

To find his score

Since for every correct answer '$3$ marks are awarded '

For every incorrect answer '$(-1)$ marks are awarded '

Total Score $=5\times 3+5\times (-1)$

$=15-5$

$=10$

ii) Reshma gets $7$ correct answer and $3$ incorrect answers

To find his score

Since for every correct answer '$3$ marks are awarded'

For Every Incorrect Answer ' (-1) marks are awarded '

Total score $=7\times 3+3\times (-1)$

$=21-3$

$=18$

iii) Reshma gets $3$ correct answer and $4$ incorrect answers

To find his score

Since for every correct answer '$3$ marks are awarded '

For every incorrect answer '$(-1)$ marks are awarded '

Total score $=3\times 3+4\times (-1)$

$=9-4$

$=5$