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? Give the rationale and then the answer.
Let's think step by step. 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.

Yasna has two books. One book is 180 pages long, and the other book is 100 pages long. If Yasna wants to finish both of the books in two weeks, how many pages will Yasna need to read every day, if she reads an equal number of pages each day? Give the rationale and then the answer.
Let's think step by step. The total number of pages is 180 + 100 = 280 pages. The number of pages Yasna needs to read every day for two weeks is 280 / 14 = 20 pages.. The answer is: 20.

Dan spent an hour doing 400 work tasks at $0.25 each. Then Dan spent an hour doing 5 work tasks at $2.00 each. How much more did Dan make doing the good work compared to the lower-paid work? Give the rationale and then the answer.
Let's think step by step. Dan spent an hour doing 400 tasks * $.25 = $100. Dan spent an hour doing 5 tasks * $2.00 each = $10.00. Dan made $100 - $10 = $90.00 per hour more doing the higher paid work.. The answer is: 90.