At an auction event, the price of a TV, whose cost was $500, increased by 2/5 times its initial price. The price of a phone, which was $400, also increased by 40% from its original price. If Bethany had taken both items to the auction, calculate the total amount she received for the items after the sale at the auction.
Let's think: If the TV's original price was $500, at the auction, its price increased by 2 / 5 * $500 = $200. The total price at which the TV was sold at the auction is $500 + $200 = $700. The price of the phone also increased at the action, a 40% increase which is 40 / 100 * $400 = $160. The total price that the phone was sold for after the auction is $400 + $160 = $560. In total, the TV and the phone sold for $700 + $560 = $1260 at the auction.. The answer is: 1260.

A cougar is sleeping for 4 hours at night, and a zebra for 2 hours more. How much time do both animals sleep in one week?
Let's think: The zebra sleeps for 4 + 2 = 6 hours. During one week, the cougar sleeps 4 * 7 = 28 hours. And the zebra sleeps 6 * 7 = 42 hours. Both animals sleep for 28 + 42 = 70 hours during one week.. The answer is: 70.

A guy goes to the tool shop and buys 5 sets of drill bits. Each set cost 6 dollars. He then pays 10% tax on the order. What was the total amount he paid?
Let's think: The drill bits cost 5 * 6 = $30. The tax came out to 30 * .1 = $3. So the total cost was 30 + 3 = $33.. The answer is: 33.

There are 28 students in a class. Two-sevenths of them were absent last Monday. How many students were present last Monday?
Let's think:

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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28 x 2 / 7 = 8 students were absent last Monday. So, 28 - 8 = 20 students were present last Monday.. The answer is: 20.