There is a lot of dust in Susie's house. It takes her 2 hours to vacuum the whole house. She can vacuum each room in 20 minutes. How many rooms does she have in her house?
Let's think: Susie spends 2 * 60 = 120 minutes vacuuming. Since she can vacuum each room in 20 minutes, she has 120 / 20 = 6 rooms in her house.. The answer is: 6.

A chocolate cake needs 3 eggs per cake. Cheesecake requires 8 eggs for each cheesecake. How many more eggs are needed for 9 cheesecakes than are needed for 5 chocolate cakes?
Let's think: Eggs in cheesecakes = 8 * 9 = 72. Eggs in chocolate cake = 5 * 3 = 15. 72 - 15 = 57. Nine cheesecakes need 57 more eggs than 5 chocolate cakes.. The answer is: 57.

At the Boisjoli farm, there is a chicken coop where 270 hens and 3 roosters live. Every morning, around 8 a.m., Ms. Mosel goes to collect the eggs because, every morning, each hen lays one. Then, after 1 hour of collection, she puts all these eggs in boxes of 6. It takes her another 40 minutes. Once all this is done, Ms. Mosel brings all the boxes of eggs to her village. She does it from Monday to Sunday, because chickens don't have a day off. How many boxes does Ms. Mosel fill each week?
Let's think: First calculate the number of eggs laid in 1 week: 270 X 7 = 1890 eggs. Now let's put these eggs in the boxes: 1890 / 6 = 315 boxes.. The answer is: 315.

Norris saved $29 in September. He saved $25 in October and $31 in November. Then Hugo spent $75 on an online game. How much money does Norris have left?
Let's think:
The total amount of money saved is $29 + $25 + $31 = $85. Norris has $85 - $75 = $10 left.. The answer is: 10.