Question

In a class test, four marks are awarded for every correct answer, one mark is deducted for every wrong answer, and zero marks are awarded for unattempted questions. Riya attempted twenty questions. Out of her answers, five were wrong. Find the marks obtained by Riya.

Answer 1

Find the marks obtained by Riya.

In a class test, For the correct answer$=4marks$, deducted for every wrong answer$=1$, for unattempted questions$=0$

Total questions attempted$=20$ and Wrong questions$=5$

Then the correct question$=20-5=15$

The marks obtained by Riya$=15\times 4+5\times \left(-1\right)$

$$\begin{gathered} =60-5 \\ =55 \end{gathered}$$

$\therefore$The marks obtained by Riya is $55$