Find the average $(A)$ of four quantities $p, q, r$ and $s$ . If $A = 6, p = 3, q = 5$ and $r = 7$ , find the value of $s$ .

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Solution

Average (A) = $\frac{p + q + r + s}{4}$
$\Rightarrow 4 A = p + q + r + s$
$\Rightarrow 4 (6) = 3 + 5 + 7 + 5 \Rightarrow 24 - 15 + 5 \Rightarrow s = 9$

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Find the average (A) of four quantities p,q,r and s. If A=6,p=3,q=5 and r=7, find the value of s.

Average (A) = p+q+r+s4⇒4A=p+q+r+s⇒4(6)=3+5+7+5⇒24−15+5⇒s=9

Find the average $(A)$ of four quantities $p, q, r$ and $s$ . If $A = 6, p = 3, q = 5$ and $r = 7$ , find the value of $s$ .

Average (A) = $\frac{p + q + r + s}{4}$
$\Rightarrow 4 A = p + q + r + s$
$\Rightarrow 4 (6) = 3 + 5 + 7 + 5 \Rightarrow 24 - 15 + 5 \Rightarrow s = 9$