rohit8865 wrote:
total sales/ N (no. of months ) = y (given)
then total sales =???
(1) n= 48 (12*4=48)
not suff..
(2) y =500
n=2(biannual) *12 = 24
total sales = 500*24
suff
Ans B
Hey
rohit8865 ,
There is a problem in your solution. I have highlighted the same.
Total sale for x years = y * 12 * x
Biannual years means total years/2 = x/2
Average sale for biannual years = Total sale for x years/ number of biannual years = y *12 *x/2x = 6y.
Now, option B tells us the value of y, hence we can find out the average sale for biannual years. Hence, option B is sufficient.
TheMastermind wrote:
How is 'n=2' multiplied by 12 in statement (2)?
Hi
TheMastermind ,
y is average monthly sale. Therefore to get annual sale, we are multiplying it with 12.
I hope that makes sense.
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