For homework, Brooke has 15 math problems, 6 social studies problems, and 10 science problems. He can answer each math problem for 2 minutes while answering each social studies problem takes him 30 seconds. If he can answer each science problem in 1.5 minutes, how long will it take Brooke to answer all his homework?
Let's think: Brooke will take 15 x 2 = 30 minutes to answer all math problems. It will take him 6 x 30 seconds = 180 seconds to answer all social studies problems. In minutes, this is equal to 180 / 60 = 3 minutes. It will take him 10 x 1.5 minutes = 15 minutes to answer all science problems. Therefore, Brooke will take 30 + 3 + 15 = 48 minutes to finish his homework.. The answer is: 48.

Laticia knitted 4 pairs of socks for her nephew. She did such a good job that everyone asked her to start selling them. In the first week, she knitted 12 pairs of socks. In the second week, she knitted 4 more pairs than the week before. On the third week, she only knitted half of the total of the first two weeks. In the fourth week, she knitted 3 fewer pairs than the week before. How many pairs of socks did Laticia knit altogether?
Let's think: In the second week, she knitted 12 + 4 = 16 pairs of socks. In the first two weeks, she knitted 12 + 16 = 28 pairs of socks. On the third week, she knitted 28 / 2 = 14 pairs of socks. On the fourth week, she knitted 14 - 3 = 11 pairs of socks. Altogether, Laticia knitted 4 + 12 + 16 + 14 + 11 = 57 pairs of socks.. The answer is: 57.

Regina has a farm with animals. She has 20 cows and four times more pigs. Someone told her, that she could sell all the animals and earn $400 for each pig and $800 for each cow. How much money would she earn if she would sell all the animals from the farm?
Let's think: Regina has 4 pigs / cow * 20 cows = 80 pigs. She could sell the pigs for 80 pigs * $400 / pig = $32000. For the cows Regina would get 20 cows * $800 / cow = $16000. In total Regina would earn $16000 + $32000 = $48000.. The answer is: 48000.

Jed’s family wants to buy 6 different board games. Each board game costs $15 and Jed paid using a $100 bill. If the cashier gave Jed only $5 bills for his change, how many bills did Jed receive?
Let's think:
Jed paid $15 x 6 = $90 for the 6 board games. He has $100 - $90 = $10 change. Therefore, Jed received$ 10 / $5 = 2 $5 bills.. The answer is: 2.