Q: In 5 years, Raven will be 4 times as old as Phoebe. If Phoebe is currently 10 years old, how old is Raven?
A: In five years, Phoebe will be 10 + 5 = 15 years old. If Raven is four times as old as Phoebe in fifteen years, he will be 4 * 15 = 60 years old in 5 years. Currently, Raven is 60 - 5 = 55 years old. The answer is 55.

Q: Job is a farmer who rears cattle and grows crops. In total he has 150 hectares of land. 25 hectares are occupied by his house and farm machinery, and 15 hectares have been reserved for future expansion. 40 hectares are dedicated to rearing cattle. Assuming the rest of his land is used for crops, how many hectares of land does Job use for crop production?
A: Job uses 25 + 15 + 40 = 80 hectares of land for non - crop purposes. Thus he uses 150 - 80 = 70 hectares for crop production. The answer is 70.

Q: Zoe wants to go on the field trip to Washington DC with her middle school this spring and the cost is $485. Her grandma gave her $250 toward her fees and she must earn the rest by selling candy bars. She makes $1.25 for every candy bar she sells. How many candy bars does Zoe need to sell to earn the money for the trip?
A:
Since Zoe’s grandma gave her some money toward her trip, she needs to come up with $485 – $250 = $235. This means she must sell $235 / $1.25 / candy bar = 188 candy bars. The answer is 188.