A store keeper earns a profit of rupees 10 by selling a new book and incurs a loss of rupees 4 per copy
of his old stock
On a particular day, he suffered a loss of rupees 50 by selling 45 new books. How many copies of books did he sell from the old stock?
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Answer:
He sold 125 old books
Step-by-step explanation:
45*10 - 4*x = (50)
450 - 4x = -50
450+50= 4x
500/4 = x
125= x
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