Question: Megan works eight hours a day and earns $7.50 per hour. If she works 20 days a month, how much will be her total earnings for two months of work?
Answer with step-by-step thinking: In a day, Megan earns 8 x $7.50 = $60. In a month, she will be earning 20 x $60 = $1200. Therefore, Megan will earn a total of 2 x $1200 = $2400 for two months of work.
So the answer is 2400.

Question: Greta, George and Gloria entered their turtles in the Key West Turtle Race. Greta's turtle finished the race in 6 minutes. George's turtle finished 2 minutes quicker than Greta's. Gloria's turtle took twice as long as George's turtle. How long did it take Gloria's turtle to finish the race?
Answer with step-by-step thinking: George's turtle finished 2 minutes quicker than Greta's so 6 - 2 = 4 minutes to finish. Gloria's turtle took twice as long as George's turtle, who finished in 4 minutes so 2 * 4 = 8 minutes.
So the answer is 8.

Question: In Mary's class, there are 25 students. Their teacher told them they could pay $50 each to finance a big science project that they and their society would benefit greatly from. They all paid the full amount except for 4 students, who paid half. How much was the class able to gather together?
Answer with step-by-step thinking:
The original amount is $50 so half is $50 / 2 = $25. 4 students paid half ($25) for a total of 4 * $25 = $100. There are 25 - 4 = 21 students left. 21 students paid the full amount ($50) for a total of 21 * $50 = $1050. They were able to gather a total of $100 + $1050 = $1150.
So the answer is 1150.