Rajesh bought 16 dozen pens & sold them one by one.He lost an amount equal to the S.P.of 4 dozen pens.Find his loss % & S.P. of 1 dozen pens,if he purchased these 16 dozen pens for Rs.240.
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LET CP OF 1 DOZEN PENS=X
I.E. CP OF 16 DOZEN PENS=16X=TOTAL COST
AND LET SP OF 1 DOZEN PENS=Y
I.E. SP OF 16 DOZEN PENS=16Y
AND SP OF 4 DOZEN PENS=4Y
NOW AS PER STATEMENT IN THE QUESTION, 16Y=16X-4Y
I.E. Y=4X/5
I.E. 4Y=16X/5
LOSS%=(16X)(100)/(5)(16X)=20%
NOW CP OF 16 DOZEN PENS=240
I.E CP OF 1 DOZEN PENS=240/16=15
LOSS=15x20/100=3
I.E. SP OF 1 DOZEN PENS=15-3=12
I.E. CP OF 16 DOZEN PENS=16X=TOTAL COST
AND LET SP OF 1 DOZEN PENS=Y
I.E. SP OF 16 DOZEN PENS=16Y
AND SP OF 4 DOZEN PENS=4Y
NOW AS PER STATEMENT IN THE QUESTION, 16Y=16X-4Y
I.E. Y=4X/5
I.E. 4Y=16X/5
LOSS%=(16X)(100)/(5)(16X)=20%
NOW CP OF 16 DOZEN PENS=240
I.E CP OF 1 DOZEN PENS=240/16=15
LOSS=15x20/100=3
I.E. SP OF 1 DOZEN PENS=15-3=12
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