Question

Right now i have $6.75 in my piggy bank. if i add $2.25 per week to the bank, and i never take out any money, then how many weeks from now will i have $45.00 in my piggy bank?​

Answer 1

8 more week till you get $45.00

Answer 2

It would take you 17 weeks to reach $45.00

Explanation:

First you multiply $2.25 with a number like 3 and add $6.75 since that what you started with. When you keep on multiplying and dont get your answer you reach 17 and then you get 38.25 . Then you add your $6.75 and you get $45.00 .

2.25 × 17 = 38.25

38.25 + 6.75 = $45.00

17 is your answer

Another way (but longer is) :

2.25 + 2.25 + 2.25 + 2.25 + 2.25 + 2.25+ 2.25 + 2.25 + 2.25 + 2.25 + 2.25 + 2.25 + 2.25 + 2.25 + 2.25 + 2.25 + 2.25 = 38.25

38.25 + 6.78 = $45.00