Question

6. A man buys two pens at 20 each. He sells one at a gain of 15% and other at a loss of
5%. Find his gain or loss per cent.
​

Answer 1

Answer:

Step-by-step explanation:

ANSWER

20

x−20

​  

=  

100

5

​  

⟹x=1;20−1+20+1=40

no loss no gain

Answer 2

Answer:

CP1=Rs 20

P%=15%

SP=?

Since,SP=(100+P)/100*CP

=(100+15)/100*20

=115/100*20

=23/20*20

=Rs 23

CP2=Rs 20

L%=5%

SP=?

Since,Sp=(100-L)/100*CP

=(100-5)/100*CP

=95/100*20

=19/20*20

= Rs 19

Now,total cp=20+20=Rs 40

Total sp=19+23

Rs 42

Since,Sp>Cp

Therefore,P=Sp-Cp

=Rs 42-Rs 40

=Rs 2

Now,Since P%=p/cp*100

=2/40*100

=1/20*100

= 5%