Question: A pen costs $9 more than a pencil. If a pencil costs $2, find the total cost of both items.
Answer with step-by-step thinking: A pen costs $9 more than $2 which is $9 + $2 = $11. Altogether they cost $11 + $2 = $13.
So the answer is 13.


Question: A firefighter is paid $30 per hour for a 48-hour workweek. He pays 1/3 of the money on rent and $500 on food and $1000 on taxes per month. Calculate the total amount of money the firefighter has after paying his monthly expenses.
Answer with step-by-step thinking: The firefighter earns $30 / hour * 48 hours / week = $1440 in a week. In a month, the firefighter earns $1440 / week * 4 weeks / month = $5760. His total monthly payment is 1 / 3 * $5760 = $1920. His total monthly expenses are $1920 for rent + $500 for food + $1000 for taxes = $3420. The total amount of money the firefighter has after his expenses is $5760 - $3420 = $2340.
So the answer is 2340.


Question: Veronica, who is the team captain of their school football team, carried 27 yellow balls and 33 brown balls to the field for the team's matchday practice. What percentage of the balls that she carried were yellow?
Answer with step-by-step thinking:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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The total number of balls that she carried is 27 + 33 = 60. The percentage that represents the yellow balls is 27 / 60 * 100% = 45%.
So the answer is 45.