Answer:
Option B is correct.
Step-by-step explanation:
First we find out how much each person spends on entertainment in a week from the given question.
Casey spends on entertainment = $50 in a week
Kelly spends 10% less than Casey = 10% of $50 = $5
Kelly spends = 50 - 5 = $45 in a week
Megan spends $5 less than Kelly = 45 - 5 = $40 in a week
Therefore Casey spends $50, Kelly spends $45 and Megan spends $40.
Answer is Megan spends $40 in a week.
