Sherman has a 30-minute commute to the office and a 30-minute commute home every day. On the weekends, he spends 2 hours, each day, driving his kids to their different activities. How many hours does Sherman drive a week?
Let's think: He drives 30 minutes to work and 30 minutes home every day for a total of 30 + 30 = 60 minutes. He makes this drive 5 days a week for a total of 5 * 60 = 300 minutes. There are 60 minutes in 1 hour and he drives 300 minutes, 5 days a week so that's 300 / 60 = 5 hours. He drives 2 hours on both Saturday and Sunday so he drives 2 * 2 = 4 hours on the weekends. He commutes 5 hours during the week and spends 4 hours driving on the weekend for a total of 5 + 4 = 9 hours.. The answer is: 9.

There are 80 passengers on the airplane where the number of men and women is equal. The rest of the passengers are children. How many children are on the airplane if there are 30 men?
Let's think: Since the number of men and women is equal, then there are a total of 30 + 30 = 60 men and women. Thus, 80 - 60 = 20 children are on the airplane.. The answer is: 20.

Grandma Olga has 3 daughters and 3 sons. If all her daughters each have 6 sons, and each of her sons has 5 daughters, how many grandchildren does she have in total?
Let's think: From her daughters, Olga has 3 x 6 = 18 grandsons. From her sons, she has 3 x 5 = 15 granddaughters. Altogether, Olga has 18 + 15 = 33 grandchildren.. The answer is: 33.

Arven bought five puppies for a total cost of $800. Three puppies are on sale for $150 each. How much does each of those two other puppies cost if they cost the same?
Let's think:
Three puppies on sale cost $150 x 3 = $450. The other two puppies cost $800 - $450 = $350. So, each of those two other puppies cost $350 / 2 = $175.. The answer is: 175.