Answer:
Expenditure = $50
Step-by-step explanation:
Sarah had a balance of $155 in her bank account at the start of the week.
She withdrew $65.50 on Monday,
$23.25 on Wednesday and,
$26.45 on Thursday
On Friday, she deposited $165.30
Total amount of money she withdrew = $65.50 + $26.45 + $26.45 = $115.20
Amount remaining = $155 - $115.20 = $39.80
After depositing $165.80 on Friday, her account had; $165.30 + $39.80 = $205.10
Expenditure = Final value in account minus initial value of the money in her account before start of the week
Expenditure = $205.10 - $155 = $50.10
