THE BEST ANSWER IS B. THE PRICE OF THE TICKET IS UNKNOWN. IT WOULD...

20. - PROBLEMS PRACTICE PHẦN 10 PPSX
PROBLEMS PRACTICE PHẦN 10 PPSX
20. The best answer is B. The price of the ticket is unknown. It would be most convenient to plug in 100 as the price of the ticket. A 30% discount of 100 is $30, that amount remained the same after the price of a ticket increased by 50%. The new price of a ticket is $150, so 30/150 is 20%.