Question

Cindy had $660 in a savings account when Erika opened a savings account with zero dollars.

Cindy deposited $60 into her account each month for x months.
Erika deposited $100 into her account each month for x months.
• The accounts did not earn interest.
Which inequality represents this situation when the amount of money in Cindy's account was greater than the amount of money in Erika's accour

Answer 1

Answer: To represent the situation where the amount of money in Cindy's account is greater than the amount of money in Erika's account, you can set up the inequality as follows:

Cindy's account balance + (Cindy's monthly deposit * number of months) > Erika's account balance + (Erika's monthly deposit * number of months)

Substituting the known values, we get:

660 + (60 * x) > 0 + (100 * x)

Combining like terms, we get:

660 + 60x > 100x

Subtracting 60x from both sides, we get:

660 > 40x

Dividing both sides by 40, we get:

16.5 > x

Therefore, the inequality that represents the situation when the amount of money in Cindy's account is greater than the amount of money in Erika's account is 16.5 > x. This means that for the number of months (x) to be greater than 16.5, the amount of money in Cindy's account must be greater than the amount of money in Erika's account.