The demand of a product over 6 weeks in 90, 110, 105, 130, 85 and 102 per week. If the average of last 3 weeks demand in x and that of last 5 weeks in y then $x+y $ (to the two decimal ) is :

212.07

The correct answer is Option (3) → 212.07

Weakly Demand of a Product over 6 weeks -

90, 110, 105, 130, 85, 102

$x$, Average of last 3 weeks = $\frac{130+85+102}{3}$

$=105.67$

$y$, Average of last 5 weeks = $\frac{110+105+130+85+102}{5}$

$=106.40$

$∴x+y=212.07$