Question

karan bought 150 dozen pencils at rs.10 a dozen.his overhead expenses were rs.100. he sold them at rs.1.20 each. what was his profit or loss percent?

Answer 1

cost of one dozen pencils = 10
no of pencil = 150 dozen
cost of 150 dozen pencils = 150×10=1500
total cost he spend =1500+100=1600

prize of each pencil =1.20
cost of 150 dozen pencil = 1.20×150×12
=144×15
=2160

profit = SP-CP
=2160-1600
=560.

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Answer 2

one dozen has 10$
he brought 150 dozen at $10/per dozen
total amount =150*10=1500
he overheard expense =$100
total expense=1500+100=1600
one dozen has 12pencil,
so 150 dozen has total pencil =150*12=1800pencils
he sold each pencil at $1.20
totally he sold them =1800pencils *$1.20=2160
was he profit $560(2160-1600)