Question: There are 5 houses on a street, and each of the first four houses has 3 gnomes in the garden. If there are a total of 20 gnomes on the street, how many gnomes does the fifth house have?
Answer: Step-by-step reasoning process: In the first four houses, there are a total of 4 houses * 3 gnomes = 12 gnomes. Therefore, the fifth house had 20 total gnomes 12 gnomes = 8 gnomes.
So the answer is 8.

Question: A trader made a profit of $960 after a week of sales. To raise $610 to pay for her next shipment of wares, she splits the profit in half and solicits donations from her family and friends. If she received a total donation of $310 and adds it to one-half of her profit, how much money did she make above her goal?
Answer: Step-by-step reasoning process: She splits her $960 profit in half to get $960 / 2 = $480. She receives a total donation of $310, so she now has $310 + $480 = $790. She needed only $610 so she has $790 - $610 = $180 more than she needs.
So the answer is 180.

Question: Chad saves 40% of the money he earns/receives in a year. This year, he made $600 mowing yards and received $250.00 for his birthday/holidays. He also made $150.00 by selling some old video games and another $150.00 doing odd jobs. How much will he save?
Answer: Step-by-step reasoning process: He made $600.00 mowing yards, $250.00 for his birthday, $150.00 selling items and $150.00 doing odd jobs so he made 600 + 250 + 150 + 150 = $1,150.00. He made $1,150.00 and will save 40% so he saves 1150 * .40 = $460.00.
So the answer is 460.

Question: Emma traveled by car 280 miles in 2 hours 20 minutes. What was the average speed of the car in miles per hour?
Answer:
Step-by-step reasoning process: We first convert the time of 4 hours 20 minutes in minutes 2 hours 20 minutes = 2 60 + 20 = 140 minutes. Average speed S is given by distance / time. Hence S = 280 miles / 140 minutes = 2 mile / minute. There are 60 minutes in an hour so the speed is 2 * 60 = 120 miles / hour.
So the answer is 120.