Question

Isabelle has $84.00 in her account on Sunday. Over the next week, she makes the following changes to her balance via deposits and purchases:
Day
Debit ($)
Credit ($)
Monday
22.35
---
Tuesday
47.60
10.29
Wednesday
15.44
---
Thursday
11.25
---
Friday
9.78
22.69
Saturday
30.54
18.86

On which day or days does Isabelle get charged an overdraft fee?
I. Thursday
II. Friday
III. Saturday
a.
I only
b.
I and III
c.
II and III
d.
III only

Answer 1

Start with $84.00.

Monday: 84.00 − 22.35 = 61.65
Tuesday: 61.65 + 10.29 − 47.60 = 24.34
Wednesday: 24.34 − 15.44 = 8.90
Thursday: 8.90 − 11.25 = −2.35 → overdraft
Friday: −2.35 + 22.69 − 9.78 = 10.56
Saturday: 10.56 + 18.86 − 30.54 = −1.12 → overdraft

Overdrafts occur Thursday and Saturday, so answer: b (I and III).