Question

Amanda worked the entire summer before her freshman year of college. She saved $2000. She withdraws $150 per week for expenses. She must have at least $200 in her account before the bank will fine her a fee. How many weeks will she be able to withdraw money before she is fine?

Answer 1

12 weeks.

Explanation:

Amanda starts with $2000 and is getting $150 per week which means that we can make the expression:

`2000-150n=200`

The expression is equal to 200 because is the limit where we can arrive to avoid the fee, then the n is the number of weeks that we are looking for:

`150n=2000-200\\n=(1800)/(200)\\n=12`

n=12 weeks