Q: Sam bought a heavy safe with a combination lock. There were four rows with twenty gold bars per row arranged in the safe. If each gold bar is worth $20000, calculate the total worth of the gold bars in the safe.
A: If there were four rows of twenty gold bars arranged in the safe, the total number of bars in the safe is 4 * 20 = 80 bars. Since each gold bar is worth $20000, the 80 bars are worth 80 * $20000 = $1,600,000. The answer is 1600000.
Question: A plumber bought 10 meters of copper and 5 more meters of plastic pipe. If each meter cost $4, how much did the plumber spent on the copper and plastic pipe?
Answer: He bought 10 + 5 = 15 meters of plastic pipe. The total meters of the copper and plastic pipe is 10 + 15 = 25. The plumber spent $4 x 25 = $100 on copper and plastic pipe. The answer is 100.
[Question]Mary sees a flock of ducks crossing the street. There are 2 ducks with 5 ducklings each, 6 ducks with 3 ducklings each, and 9 ducks with 6 ducklings each. How many ducks and ducklings are there total?
[Answer]First find the total number of ducklings the first two ducks have: 2 ducks * 5 ducklings / duck = 10 ducklings. Then find the total number of ducklings the next six ducks have: 6 ducks * 3 ducklings / duck = 18 ducklings. Then find the total number of ducklings the last 9 ducks have: 9 ducks * 6 ducklings / duck = 54 ducklings. Then add up all the ducks and ducklings to find the total number: 10 ducklings + 18 ducklings + 54 ducklings + 2 ducks + 6 ducks + 9 ducks = 99 ducks. The answer is 99.
Q: The toothpaste in Anne's family's bathroom contains 105 grams. Anne's dad uses 3 grams at each brushing, her mom uses 2 grams, Anne and her brother use 1 gram each. Each member of the family brushes their teeth three times a day. How many days will it take for the toothpaste to run out?
A: Anne and her brother use 1 gram + 1 gram = 2 grams. Anne's dad uses 3 grams and Anne's mom uses 2 grams so together they use 2 grams + 3 grams + 2 grams = 7 grams / wash. Each day, the family uses 7 grams / wash * 3 washes / day = 21 grams. Using that amount daily, the toothpaste will last 105 grams / 21 grams / day = 5 days. The answer is 5.
Question: There are 40 students in a class. If 1/10 are absent, 3/4 of the students who are present are in the classroom, and the rest are in the canteen, how many students are in the canteen?
Answer: Out of the 40, 40 x 1 / 10 = 4 students are absent. So, 40 - 4 = 36 students are present in school. Out of the 36, 36 x 3 / 4 = 27 students are in the classroom. This means, 36 - 27 = 9 students are in the canteen. The answer is 9.
Q: Nina loves to travel. She tries to travel at least 400 kilometers in one month outside of her home country. Every second month she does twice that distance. If she were able to keep up with her resolution, how many kilometers would she travel during 2 years?
A:
Every second month Nina does twice the regular distance, which means 400 * 2 = 800 kilometers. Two years is 24 months, so half of this time is 24 * 0.5 = 12 months. So in 12 months Nina does 400 * 12 = 4800 kilometers. And in the other 12 months, she does 800 * 12 = 9600 kilometers. So in two years, Nina would be able to make 4800 + 9600 = 14400 kilometers. The answer is 14400.