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In which story is the answer to the question $0$ ? $\newline$ Choices: $\newline$ (A)Last Sunday, Bonnie deposited a check for $\$40$ that she earned from babysitting. Later in the week, she deposited another $\$40$ from watching her neighbor's dog. How much did her account balance change? $\newline$ (B)Last Sunday, Bonnie deposited a check for $\$40$ that she earned from babysitting. Later in the week, she withdrew $\$40$ to go to the mall with her friends. How much did her account balance change?

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Quantities that combine to zero: word problems

Full solution

Q. In which story is the answer to the question

0

?

\newline

Choices:

\newline

(A)Last Sunday, Bonnie deposited a check for

\$40

that she earned from babysitting. Later in the week, she deposited another

\$40

from watching her neighbor's dog. How much did her account balance change?

\newline

(B)Last Sunday, Bonnie deposited a check for

\$40

that she earned from babysitting. Later in the week, she withdrew

\$40

to go to the mall with her friends. How much did her account balance change?

Calculate Total Deposits: Analyze story (A). Bonnie deposited $\$40$ twice, adding up to $\$80$ in total deposits. Calculate the change in her account balance from these deposits. $\newline$ Calculation: $\$40 + \$40 = \$80$
Calculate Total Change: Since there are no withdrawals or other transactions mentioned in story (A), the total change in her account balance is the sum of the deposits. $\newline$ Calculation: Total change = $\$80$
Calculate Net Change: Analyze story (B). Bonnie deposited $\$40$ and then withdrew $\$40$ . Calculate the net change in her account balance. $\newline$ Calculation: $\$40 - \$40 = 0$
Compare Results: Compare the results from both stories to find where the answer is $0$ . In story (A), the change is $\$80$ ; in story (B), the change is $0$ . $\newline$ Calculation: Compare $\$80$ and $\$0$

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