[Question]Ronnie is a train engineer. His train pulls 3 red boxcars, 4 blue boxcars, and 7 black boxcars. If the black boxcars can each hold 4000 pounds of coal, which is half as much as what the blue boxcars can hold, and the red boxcars can hold 3 times as much as the blue boxcars, how many pounds of coal can all of the train's boxcars combined hold?
[Answer]If we let X represent the number of pounds of coal that the blue boxcar can hold, then 4000 = (1 / 2)X. Solving for X, we get X = 8000 pounds of coal, which represents what the blue car can hold. Thus, the red boxcar can hold 3 * 8000 = 24,000 pounds of coal. 3 red boxcars can carry 3 * 24,000 = 72,000 pounds of coal. 7 black boxcars can carry 7 * 4,000 = 28,000 pounds of coal. 4 blue boxcars carry 4 * 8,000 = 32,000 pounds of coal. Together, all the trains boxcars can carry 72,000 + 28,000 + 32,000 = 132,000 pounds of coal. The answer is 132000.
Q: There are many fish in the tank. One third of them are blue, and half of the blue fish have spots. If there are 10 blue, spotted fish, how many fish are there in the tank?
A: There are 2 * 10 = 20 blue fish. There are 3 * 20 = 60 fish. The answer is 60.
Question: The Tampa Bay Bucs have 13 football players and 16 cheerleaders. If 10 football players and 4 cheerleaders quit, how many football players and cheerleaders are left?
Answer: There are 13 - 10 = 3 football players left. There are 16 - 4 = 12 cheerleaders left. In total there are 3 + 12 = 15 football players and cheerleaders left. The answer is 15.
[Question]Twice the money Jericho has is 60. He owes Annika $14 and also owes half as much to Manny. After paying off all his debts, how much money will Jericho be left with?
[Answer]Jericho has $60 / 2 = $30. He owed Manny $14 / 2 = $7. His debts amount to $14 + $7 = $21. So Manny will have $30 - $21 = $9 left. The answer is 9.
Q: Tom originally was only able to lift 80 kg farmer handles per hand. After some training, he was able to double this number. He then decided to specialize and was able to get an extra 10%. How much weight can he hold in total?
A: After doubling he was able to hold 80 * 2 = 160 kg per hand. Specialization gave him another 160 * .1 = 16 kg. So he lifted 160 + 16 = 176 kg per hand. That means he lifted a total of 352 kg. The answer is 352.
Question: Out of the 80 students who took the biology exam, only 2/5 of them managed to score 100%. If a score below 80% qualified as failing, and 50 percent of the remaining students who didn't score 100% managed to score over 80%, calculate the number of students who failed the exam.
Answer:
The number of students who scored 100% is 2 / 5 * 80 = 32. Out of the 80 students, 80 - 32 = 48 did not score 100%. If 50% of the students who did not score 100% managed to score over 80%, then 50 / 100 * 48 = 24 students scored over 80%. The number of students who failed is 48 - 24 = 24. The answer is 24.