180k views
4 votes
Ariel deposited $600 into a bank account. Each Friday she will withdraw 10% of the money in the account to spend. Ariel thinks her account will be empty after 10 withdrawals. Do you agree? Explain.

1 Answer

5 votes

Answer:

No

Explanation:

Ariel will always have some money remaining.

We can demonstrate this by designing a table.

Each week she starts with a certain amount. At the end of the week she deducts 10 %, and the amount remaining becomes the starting amount for the next week.

Week Principal Less 10 % Remaining

1 600.00 60.00 540.00

2 540.00 54.00 486.00

3 486.00 48.60 437.40

4 437.40 43.74 393.66

5 393.66 39.37 354.28

6 354.28 35.43 318.85

7 318.85 31.89 286.97

8 286.97 28.70 258.27

9 258.27 25.83 232.44

10 232.44 23.24 209.20

Ariel will still have $209.20 in her account after 10 weeks.

User Alex Po
by
8.2k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories