Question: Timmy plans to ride a skateboard ramp that is 50 feet high. He knows he needs to go 40 mph at the start to make it all the way to the top. He measures his speed on three trial runs and goes 36, 34, and 38 mph. How much faster does he have to go than his average speed to make it up the ramp?
Answer: His total speed from the trials is 108 because 36 + 34 + 38 = 108. His average speed was 36 mph because 108 / 3 = 36. He needs to go 4 mph faster to make it to the top because 40 - 36 = 4. The answer is 4.

Question: A factory produces 90 refrigerators per hour. It also produces 70 more coolers than refrigerators per hour. How many products did the factory produce for 5 days if it works 9 hours a day?
Answer: The factory produces 90 + 70 = 160 coolers per hour. The factory works 5 * 9 = 45 hours in 5 days. The factory produces ( 90 + 160) * 45 = 11250 products for 5 days. The answer is 11250.

Question: Laticia knitted 4 pairs of socks for her nephew. She did such a good job that everyone asked her to start selling them. In the first week, she knitted 12 pairs of socks. In the second week, she knitted 4 more pairs than the week before. On the third week, she only knitted half of the total of the first two weeks. In the fourth week, she knitted 3 fewer pairs than the week before. How many pairs of socks did Laticia knit altogether?
Answer: In the second week, she knitted 12 + 4 = 16 pairs of socks. In the first two weeks, she knitted 12 + 16 = 28 pairs of socks. On the third week, she knitted 28 / 2 = 14 pairs of socks. On the fourth week, she knitted 14 - 3 = 11 pairs of socks. Altogether, Laticia knitted 4 + 12 + 16 + 14 + 11 = 57 pairs of socks. The answer is 57.

Question: Gina had $400. She gave 1/4 of her money to her mom, used 1/8 of her money to buy clothes, gave 1/5 of her money to a charity, and kept the remaining money. How much did Gina keep?
Answer:
Gina's mom received 1 / 4 x $400 = $100. She used 1 / 8 x $400 = $50 to buy clothes. She gave 1 / 5 x $400 = $80 to a charity. Thus, she spent a total of $100 + $50 + $80 = $230. Therefore, Gina kept $400 - $230 = $170. The answer is 170.