Question 17 • 25-26 CRX Math Models with Applications 7052A
Ronald is trying to reconstruct his spending pattern from May. He knows that he had $315 in his account on May 1, but after that, his receipts and balance statements are all scrambled. Here are Ronald’s records:DateTransaction TypeAmount ($)5/25Purchase665/18Purchase905/30Purchase1885/24Deposit1515/22Purchase1525/8Deposit1045/3Purchase1755/6Purchase82Assuming that this is a complete, if scrambled, record of Ronald’s May spending and that any overdraft fees incurred do not affect the running total, how many times did Ronald overdraw his account in May?
Answer
A
Ronald never overdrew his account.
B
Ronald only overdrew his account once.
C
Ronald overdrew his account twice.
D
Ronald overdrew his account more than twice.
Explanation
Put the transactions in date order, starting with $315. After the May 3 purchase of $175 and May 6 purchase of $82, Ronald has $58; the May 8 deposit brings that to $162, and the May 18 purchase leaves $72. The May 22 purchase of $152 takes the balance below zero, and the May 24 deposit brings it back to $71; after the May 25 purchase, he has $5. The May 30 purchase of $188 takes the balance below zero a second time, so the correct choice is “Ronald overdrew his account twice.”
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