Question: Jen has 10 more ducks than four times the number of chickens. If Jen has 150 ducks, how many total birds does she have?
Answer: Let the number of chickens be c. If there are 150 ducks, we can describe the number of chickens as 150 = 10 + 4c. So, 4c = 150. And, there are c = 35 chickens. In total, Jen has 35 chickens + 150 ducks = 185 birds. The answer is 185.

Question: There are 20 students in a class. Only one-fourth of the students stayed in the classroom while the rest went to the playground. Of those who went to the playground, one-third are boys. How many girls are there on the playground from this class?
Answer: Out of the 20 students, 20 x 1 / 4 = 5 students stayed in the classroom. While 20 - 5 = 15 students went to the playground. Out of these 15 students, 15 x 1 / 3 = 5 are boys. Therefore, 15 - 5 = 10 girl students from this class are in the playground. The answer is 10.

Question: Lexie and Tom went apple picking. Lexie picked 12 apples and Tom picked twice as many apples. How many apples did they collect altogether?
Answer: Tom picked 12 x 2 = 24 apples. Altogether, they picked 12 + 24 = 36 apples. The answer is 36.

Question: Four classmates were comparing their ages based on their birth month. They found out that Jolyn is 2 months older than Therese while Therese is 5 months older than Aivo. Then, Leon is 2 months older than Aivo. How much older in months is Jolyn than Leon?
Answer:
Jolyn is 2 + 5 = 7 months older than Aivo. Since Leon is 2 months older than Aivo, then Jolyn is 7 - 2 = 5 months older than Leon. The answer is 5.