Question

The value of $p+q+r=50$. If $p=12$ and $q=8$ then find the value of $r$.

• A. $20$
• B. $25$
• C. $30$
• D. $35$

Answer 1

The correct option is C $30$

$\underset{–}{\text{Given:}}$
$p+q+r=50$, $p=12$ and $q=8$,

$\underset{–}{\text{Need to Find:}}$ Value of $r$

$p+q+r=50$

By substituting $p=12$ and $q=8$ in the above equation, we get:

$\Rightarrow 12+8+r=50$

$\Rightarrow 20+r=50$

$\Rightarrow 20+r-20=50-20$
(subtracting $20$ from both the sides)

$\Rightarrow r=30$

Therefore, option (c) is the correct choice.