A bookstore manager earns a profit of rupees 20 by selling one new book and incurs a loss of rupees 10 by selling a second hand old book. In a particular month he earns neither profit nor loss. If he sold 25 new book, how many second hand old books did he sell?
Answer:
24
Step-by-step explanation:
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50
explanation:
new book sold= 25
one book profit= 20rs
total = 500
one month profit = 0
therefore,old book sold = ‘ ( 2 × 25 ) ‘× 10 = 500 = loss of 500 ( – 500 )
= 2 × 25
= 50