[Question]Parker went to the gym and found 4 twenty pounds dumbbells set up for weightlifting. He added two more dumbbells to the setup and started his exercises. How many pounds of dumbbells is Parker using for his exercises?
[Answer]4 twenty - pound dumbbells weigh 4 * 20 = 80 pounds. When Parker added two more dumbbells to the setup, he increased the weight by 2 * 20 = 40 pounds. The dumbbells that Parker used to do his exercise weigh a total of 40 + 80 = 120 pounds. The answer is 120.
Q: Carmen had 28 cats and 18 dogs before she gave 3 of the cats up for adoption. How many more cats than dogs does Carmen have now?
A: First find the number of cats Carmen has left: 28 cats - 3 cats = 25 cats. Then subtract the number of dogs from the number of cats to find the difference: 25 cats - 18 dogs = 7 more cats. The answer is 7.
Question: Tim buys a book of esoteric words. He learns 10 words from it a day. In 2 years the book has increased the number of words he knows by 50%. How many words did he know originally?
Answer: In 2 years there are 365 * 2 = 730 days. So he has learned 730 * 10 = 7300 words. He knew 1 / .5 = 2 times that number of words before the book. So he knew 7300 * 2 = 14600 words before. The answer is 14600.
[Question]TreShaun's full marker has enough ink in it to paint three 4 inch by 4 inch squares. If he colors in two 6 inch by 2 inch rectangles, what percentage of ink is left?
[Answer]Each 4 by 4 square equals 16 square inches because 4 x 4 = 16. Three squares equals 48 square inches because 3 x 16 = 48. Each rectangle uses 12 square inches because 2 x 6 = 12. Both rectangles will use 24 square inches because 2 x 12 = 24. He has 1 / 2 of the ink left because 24 / 48 = 1 / 2. He has 50% of the ink left because 1 / 2 x 100 = 50. The answer is 50.
Q: Luigi bought four pizzas for $80. Each pizza was cut into 5 pieces. How much did each piece of pizza cost, in dollars?
A: 4 pizzas at $80 per pizza is $80 / 4 = $20 per pizza. If there were 5 pieces per pizza, then each piece was worth $20 / 5 = $4. The answer is 4.
Question: There is a pie-eating contest at school. Adam eats three more pies than Bill. Sierra eats twice as many pies as Bill. If Sierra ate 12 pies, how many pies were eaten in total?
Answer:
Bill ate 12 / 2 = 6 pies. Adam ate 6 + 3 = 9 pies. They ate a total of 6 + 9 + 12 = 27 pies. The answer is 27.