Q: A ship left a port and headed due west, having 400 pounds of food for the journey's supply. After one day of sailing, 2/5 of the supplies had been used by the sailors in the ship. After another two days of sailing, the sailors used 3/5 of the remaining supplies. Calculate the number of supplies remaining in the ship to last the sailors until they dock.
A: After one day of sailing, 2 / 5 * 400 = 160 pounds of food supplies had been used. The total number of supplies remaining in the ship is 400 - 160 = 240 pounds. After another 2 days of sailing, 3 / 5 * 240 = 144 pounds of food had been used. The total number of supplies remaining in the ship is now 240 - 144 = 96 pounds. The answer is 96.
Question: If 60% of the students at school are girls and the number of boys is 300, how many girls are at the school?
Answer: Boys make up 100% - 60% = 40% of the total number of students. The total number of students at the school is 300 / (40 / 100) = 750 students. Since 60% of the students are female, there are (60 / 100) * 750 = 450 female students. The answer is 450.
[Question]Ten percent of Jonessa's pay goes to paying tax. If her pay is $500, how much is her take-home pay?
[Answer]Ten percent of $500 is $500 x 10 / 100 = $50. Hence, Jonessa's take - home pay is $500 - $50 = $450. The answer is 450.
Q: Three builders build a single floor of a house in 30 days. If each builder is paid $100 for a single day's work, how much would it cost to hire 6 builders to build 5 houses with 6 floors each?
A: 6 builders can build a single floor 6 builders / 3 builders = 2 times as fast as 3 builders. Thus 6 builders would build a single floor in 30 days / 2 = 15 days. There are 5 hours x 6 floors / house = 30 floors in total in 5 houses with 6 floors each. Therefore 6 builders would complete the project in 15 days / floor x 30 floors = 450 days. It would cost 450 days x $100 / day / builder * 6 builders = $270000 to complete the project. The answer is 270000.
Question: A single line is worth 1000 points. A tetris is worth 8 times that much. Tim scored 6 singles and 4 tetrises. How many points did he score?
Answer: A tetris is worth 8 * 1000 = 8000 points. So he scored 4 * 8000 = 32000 points from tetrises. He also scores 6 * 1000 = 6000 points from singles. So in total he scores 32000 + 6000 = 38,000 points. The answer is 38000.
Q: Lyra bought a pair of shoes at a 20% discount. If she paid $480, how much was the original price of the pair of shoes?
A:
Lyra only paid $480 for the pair of shoes which is only 100% - 20% = 80% of the original price. So let x be the original price. Then 0.8x = $480. Thus x = $480 / 0.8 = $600. The answer is 600.