Tonya is saving money to buy a computer that costs $375. She has saved $75 already and each week she adds $25 to her savings. How many weeks will it take her to buy the computer?

It will take her 12 weeks if she saves the money she gets per week

Since the price of the computer is $375 and she already has $75 dollars saved she only needs $300 more to buy the computer.

She gets $25 per week so she it will take (25/300) weeks for to buy the computer

so that simplifies into 12 weeks

therefore it will take her 12 weeks to buy her computer