Question

suppose that you have 75$ in your savings account and you save an additional 5$ per week. your friend has 30$ in his savings account and saves and additional 10$ per week. In how many weeks will you both have the same amout of money in yoir accounts?

Answer 1

12 weeks

Explanation:

your account

75 total

5 a week to add in

friend account

30 total

10 a week to add in

you need to first recognize that the friend might have a lower balance but he will be adding in double a week compared to you.

it will take him it will take you

starting 30 75

week 1 40 80

week 2 50 85

week 3 60 90

week 4 70 95

week 5 80 100

week 9 90 105

week 10 100 110

week 11 110 115

week 12 120 120