Question

the c.p of 36 books is equal to the s.p of 30 books the gain%???​

Answer 1

EXPLAINED CLEARLY IN THE PICTURE

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Answer 2

Answer:20%

Step-by-step explanation: These type of questions can be solved by a shortcut:

If the c.p. of x articles is equal to the s.p of y articles then the gain % is

((x-y)/y)*100

So 36-30/30*100=6/30*100=1/5*100=20%

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