Question

A shopkeeper buys 20 pens for rupees hundred and sells them at the rate of rupees 10 per pen find his gain or loss on selling all the pens​

Answer 1

Answer:

gain is 100 rupees

Step-by-step explanation:

Cost of 20 pens bought by shopkeeper = ₹ .100 (cp)

so cost at which 1 pen is bought = 100/20 = ₹.5

cost at which 1 pen is sold = ₹. 10

cost at which 20 pens are sold = 20 × 10 = ₹.200. (sp)

amout gained = cost at which pens are sold - cost at which they are bought

so gain = 200-100 =₹. 100

Hope it would have helped(◠‿・)—☆

Answer 2

Step-by-step explanation:

given 20 pen buys=Rs 100

he sell 10 per pen so

sp =10×20=200

gain = sp _ cp

gain=200_100=100

gain%=gain%/100×100

=100%