Question

Anne opened a savings account and deposited $10. If the balance in her account doubles each month, what is the account balance after 4 months/

Answer 1

Answer: $160

Explanation:

Anne opened a savings account and put in $10.00.

Double = 2 times the amount.

Since the balance doubles each month:

1 month: $20.00 (10 x 2)

2 month: $40.00 (20 x 2)

3 month: $80.00 (40 x 2)

4 month: $160.00 (80 x 2)

Answer 2

$160

Explanation:

You can set up an equation that will work for any time period, but since it is only 4 months we can do this simply too:

10 x 2 = 20

20 x 2 = 40

40 x 2 = 80

80 x 2 = 160

$160