Question

60 pens are bought at 6 for Rs.60 and all of them are sold at 5 for Rs.60. (I) find cp of one pen (ii) profit percent made by selling 20 pens.​

Answer 1

Answer:

Rate of cost price of pens = Rs 5 for 6 pens.

So, Cost Price (CP) for a pen =

6

5

Rs

Rate of selling price of pens = Rs 6 for 5 pens.

So, Selling Price (SP) for a pen =

5

6

Rs

∴Profit=SP−CP=

5

6

−

6

5

=

30

36−25

=

30

11

Rs

⇒Profit percentage=

CP

Profit×100

=

6

5

30

11

×100

=44%

Answer 2

Answer:

Rate of cost price of pens = Rs 5 for 6 pens.

So, Cost Price (CP) for a pen =65 Rs

Rate of selling price of pens = Rs 6 for 5 pens.

So, Selling Price (SP) for a pen =56 Rs

∴Profit=SP−CP=56−65=3036−25=3011 Rs

⇒Profit percentage=CPProfit×100=653011×100=44%

Step-by-step explanation:

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