Question

Tina is saving to buy a notebook computer. She has two options. The first option is to put $200 away initially and save $10 every month. The second option is to put $100 away initially and save $30 every month. After how many months would Tina save the same amount using either option? How much would she save with either option?

Answer 1

They would be the same being 250$ on the 5th month. The way I solved this is I made a equation for each being ( 10x + 200 = ) and ( 30x + 100 = ) If you put 5 in the place of x, you will multiply it by the 10 or 30 and add the original cost put in.