Tony is saving money to buy a computer monitor that costs $265. He has $40 saved, and each week he adds $25 to his savings. How many weeks will it take him to save enough money to buy the computer monitor?

9 weeks

Step-by-step explanation:

Cost of the monitor = $265

Money he has already saved before = $40

Money needed to save in order to buy the monitor = $265 - $40

                                                                                     = $225

Each week he adds $25 . So,

No. of weeks taken by him to save a total of $225 = $225 / $25

                                                                                     = 9 weeks