[Question]: It takes 3 men an hour to complete a job. If they are hired to work on 5 such similar jobs by a company that pays each of them $10 per hour, calculate the total amount of money the three will earn when they complete the jobs?
[Answer]: Since they are paid $10 each per hour of work and can complete a job in one hour, they earn a total of $10 * 3 = $30 together for an hour of work. If they earn together $30 for one job, for the five jobs, they'll earn $30 * 5 = $150.
So the answer is 150.

[Question]: A magazine costs $3 each. Jewel bought 10 magazines to be sold at $3.50 each. How much will be Jewel gain from selling these?
[Answer]: Jewel's gain for each magazine is $3.50 - $3 = $0.50. Thus, her total gain will be $0.50 x 10 = $5.
So the answer is 5.

[Question]: Bill picked 50 apples from the orchard with his wife and two children. He sends each of his kids to school with 3 apples for their two favorite teachers. His wife Jill bakes two apple pies, using 10 apples per pie. How many apples does Bill have left?
[Answer]:
Bill gives each of his children 3 apples, so since he has two children this is 3 * 2 = 6 apples. Jill bakes 2 apple pies, using 10 apples each so this means she uses 10 * 2 = 20 apples. In total, this means 20 + 6 = 26 apples were used. Since Bill began with 50 apples, this means there are 50 - 26 = 24 apples remaining.
So the answer is 24.