Question

A buys n copies of a book at 20% discount.
B gets the same book at 30% discount. What
is the minimum value of n for which В can
buy one extra copy of the book, spending the
same amount as A?
1. 7
2. 8
3. 6
4. This problem cannot be solved unless the
marked price of the book is known.
​

Answer 1

Answer:

sorry which class I don't know this answers questions