Question

7. A dealer bought 100 pens and sold them for 2160. If he made
20% profit, find the cost price of a pen.
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Answer 1

Answer:

₹27

Step-by-step explanation:

selling price of 100 pens = ₹2160

profit he get= 20%

we know that

[(c.p-s.p)/(c.p)]×100=20

[(c.p-2160)/c.p]=1/5

5 c.p -5(2160)= c.p

4 c.p= 5(2160)

c.p= 5(540)

c.p= 2700

hence cost price of 100 pens is ₹2700

therefore, cost price of 1 pen is ₹27

Answer 2

Answer:

17.28 is the cost of each pen

Step-by-step explanation:

here,

selling price= 2160

rate of profit is 20%

therefore

profit = (20÷100)×2,160

=432

hence

cost price=2160-432

=1728

therefore, cost of each pen is

1728÷100

=17.28