Question: There were 8000 jelly beans in a certain barrel, and 10 people lined up to take some. The first six people each took twice as many jelly beans as each of the last four people took. If the last four people each took 400 jelly beans, how many jelly beans remained in the container?
Answer with step-by-step thinking: If the last four people each took 400 jelly beans, they took a total of 4 * 400 = 1600 jelly beans. The first six people each took twice as many jelly beans as each of the last four people took, meaning each of them took 2 * 400 = 800 jelly beans. The total number of jelly beans the first six people took is 800 * 6 = 4800 jelly beans. Together, all 10 people took together 4800 + 1600 = 6400 jelly beans. If there were 8000 jelly beans in a certain barrel, the number of jelly beans that remained is 8000 - 6400 = 1600.
So the answer is 1600.


Question: A watermelon stand sold 46 watermelons. Seventeen customers bought one melon, three customers bought three melons, and the rest bought two melons. How many customers bought two watermelons?
Answer with step-by-step thinking: The customers that bought one watermelon bought 1 * 17 = 17 melons. The customers that bought three melons bought 3 * 3 = 9 melons. The stand sold 46 - 17 - 9 = 20 melons to customers who bought 2 melons. Thus, 20 / 2 = 10 customers bought two watermelons.
So the answer is 10.


Question: Henry scored 50 points on his Geography test, 70 on his Math test and 66 on his English test. If his History score is the average of these 3 scores, what was his total score across all 4 subjects?
Answer with step-by-step thinking:
The sum of his scores across the first 3 subjects is 50 + 70 + 66 = 186. The average score over the 3 subjects which is his History score is = total / 3 = 186 / 3 = 62. Therefore his score across all 4 subjects = 186 + 62 = 248.
So the answer is 248.