[Question]If there are sixty-five dolphins in the ocean, and three times that number joins in from a river which has its mouth at the ocean, calculate the total number of dolphins in the ocean.
[Answer]When three times the number of dolphins in the ocean joins in from a river, the number of dolphins in the ocean increases by 3 * 65 = 195. The total number of dolphins in the ocean increases to 195 + 65 = 260. The answer is 260.

[Question]At the end of the first quarter, the winning team had double the points of the losing team. At the end of the second quarter, the winning team had 10 more points than it started with. At the end of the third quarter, the winning team had 20 more points than the number it had in the second quarter. If the total points the winning team scored in the game was 80, and the losing team had 10 points in the first quarter, calculate the total number of points the team scored in the fourth quarter.
[Answer]At the end of the first quarter, the winning team had double the points of the losing team, meaning the winning team had already scored 10 * 2 = 20 points. At the end of the second quarter, the winning team had 10 more points than it started with, a total of 20 + 10 = 30 points. At the end of the third quarter, the winning team had 20 more points than the number it had in the second quarter, a total of 20 + 30 = 50 points. If the total points the winning team scored in the game was 80, they scored 80 - 50 = 30 points in the fourth quarter. The answer is 30.

[Question]When Jeffrey walks, for every three steps forward, he takes two steps backwards. Therefore, if the distance between the house and the mailbox is 66 steps, what is the total number of steps Jeffrey takes when he goes from the house to the mailbox?
[Answer]For every 3 steps forward, he adds 2 more backwards so each 'step' gained costs 5 actual steps. 66 steps distance * 5 steps moved = 330 steps total. The answer is 330.

[Question]The zoo has 50 new visitors entering the zoo every hour. The zoo is open for 8 hours in one day. If 80% of the total visitors go to the gorilla exhibit, how many visitors go to the gorilla exhibit in one day?
[Answer]
The zoo has 50 * 8 = 400 visitors in one day. The number of visitors that go to the gorilla exhibit in one day is 400 * 0.80 = 320 visitors. The answer is 320.