Question

on selling 100 pencils a man gains the selling price of 20 pencils . his gain percent is​

Answer 1

Answer:

25%

Step-by-step explanation:

S.P. of 100 pencils − C.P. of 100 pencils = S.P. of 20 pencils

⇒ S.P. of 80 pencils = C.P. of 100 pencils

Let C.P. of 1 pencil = Rs. 1

Then S.P. of 80 pencils = Rs. 100

⇒ C.P. of 80 pencils = Rs. 80

Therefore,Profit%= 100-80

_______X100= (20/80)X100=

80

=25%

#Hope it is helpful

#Mark as brainliest

Answer 2

Answer 25

Description for Correct answer:
Let SP of 1 pencil is 1 Rs. 1

SP of 100 pencils is Rs. 100

CP of 1 pencil is Rs. x

CP of 100 pencils is Rs. 100x

According to question,

Gain = SP - CP

20 = 100 - 100x

100x = 80

x=80100=45, x=45


CP of 1 pencil = Rs. 45


CP of 100 pencils =45×100
= Rs. 80

SP of 100 pencils = Rs. 100

∴
gain% = 2080×100
= 25%