John has been having trouble sleeping lately. In the past week he was only able to get 3 hours of sleep on 2 of the days and on the remaining days he was only able to get 60% of the recommended 8 hours of sleep. How much sleep did he get this week?
Let's think: For the 2 days he gets 2 * 3 = 6 hours. He gets 60% of the recommended amount for 7 - 2 = 5 days. On those days he gets 8 * .6 = 4.8 hours. So he gets 5 * 4.8 = 24 hours. So he gets a total of 24 + 6 = 30 hours of sleep.. The answer is: 30.

Jenny brought in 40 peanut butter cookies and 50 chocolate chip cookies for the bake sale. Marcus brought in 30 peanut butter cookies and and 20 lemon cookies. If Renee, who's allergic to peanuts, picks a cookie at random, what is the chance she'll have an allergic reaction expressed as a percentage?
Let's think: First find the total number of peanut butter cookies: 40 peanut butter cookies + 30 peanut butter cookies = 70 peanut butter cookies. Then find the total number of cookies by adding the number of peanut butter cookies to the number of the other two types: 70 peanut butter cookies + 50 chocolate chip cookies + 20 lemon cookies = 140 cookies. Then divide the number of peanut butter cookies by the total number of cookies and multiply by 100% to find the percentage chance of Renee getting a peanut butter cookie: 70 peanut butter cookies / 140 cookies * 100% = 50%.. The answer is: 50.

The Zargon Destroyer spacecraft can travel at 2 billion miles per hour in normal space, but when moving through a black hole they travel three times faster. If the Zargon Destroyer is making a voyage that travels seven hours in normal space and two hours through a black hole, how many billions of miles would they have traveled?
Let's think: A spacecraft flying through normal space for seven hours at 2 - billion miles per hour travels 7 * 2 = 14 billion miles. A spacecraft flying through a black hole at 3 * 2 = 6 billion miles per hour. Thus, a spacecraft flying through a black hole for two hours travels 2 * 6 = 12 billion miles. Therefore, in total, the Zargon spacecraft will travel 14 + 12 = 26 billion miles.. The answer is: 26.

Jaynie wants to make leis for the graduation party. It will take 2 and half dozen plumeria flowers to make 1 lei. If she wants to make 4 leis, how many plumeria flowers must she pick from the trees in her yard?
Let's think:
To make 1 lei, Jaynie will need 2.5 x 12 = 30 plumeria flowers. To make 4 leis, she will need to pick 30 x 4 = 120 plumeria flowers from the trees.. The answer is: 120.