An electrical appliances store sold this month 400% more than the average of all the other months in the year. The sales total for this month was approximately what percent of total sales for this year?  Select:	A) 14%	B) 21%.	C) 31%.	D) 37%.	E) 43%.
The average sales for all the other months (11 months) of the year is x.   So, the total sales of those 11 months will be= 11x   Now, this month's sales, which is 400% more than the average of other months' sales, is 5x, (x+400% of x).   Thus, this month's' sales are (5x/16x)*100=31.25% of the total yearly sales. [Total sales (5 /16 )*100= 
<gadget id="calculator"> (5 /16 )*100</gadget>
<output>125/4 = around 31.25</output>
31.25% of the total yearly sales. [Total sales=11x+5x=16x]   Answer is 21%.11 +5= 
<gadget id="calculator">11 +5</gadget>
<output>16</output>
16x]   Answer is 21%.
<result>B</result>
An electrical appliances store sold this month 400% more than the average of all the other months in the year. The sales total for this month was approximately what percent of total sales for this year?