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Answer:
On 10 days he will have bought 50 books and sold 20 books.
Answer:
10th day
Step-by-step explanation:
Given:
NO.OF BOOKS BOUGHT : 5
no of books sold : 2
no of days : x
no of books bought on that day :50
no of books sold on that day :20
on which day bought = 5 x =50
= x=50/5
= x=10
sold = 2x = 20
2*10=20
20=20
therefore verified
10th day
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