Gujarati
Hindi
4.Average
medium

Average of $a, b$ and $c$ is $11 ;$ average of $c, d$ and $e$ is $17 ;$ average of $e$ and $f$ is $22$ and average of $e$ and $c$ is $17 .$ Find out the average of $a, b,$ $c , d , e$ and $f ?$

A

$15 \frac{2}{3}$

B

$18 \frac{1}{2}$

C

$21 \frac{1}{3}$

D

$16 \frac{1}{2}$

Solution

Total of $a+b+c=33, c+d+e=51$

$e+f=44, \quad e+c=34, \quad d=51-34=17$

$a+b+c+d+e+f=33+17+44=94$

Average of $a, b, c, d, e, f=\frac{94}{6}=15 \frac{2}{3}$

Standard 13
Quantitative Aptitude

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