To make room for a new inventory of books, Gordon's local bookstore is offering 30% off any book that is over $22.00 and 20% off any book under $20.00. He buys several books with the following prices; $25.00, $18.00, $21.00, $35.00, $12.00 and $10.00. How much will he spend on books?
Let's think: He gets 30% off any book over $22 and he buys books that cost $25.00 and $35.00 so the total cost of these books is $25 + $35 = $60.00. At 30% off, the discount on these books is $60 * .30 = $18.00. That mean these 2 books will cost $60 - $18 = $42.00. He gets 20% off any book under $20 and he buys books for $18.00, $12.00 and $10.00 so these books together cost $18 + $12 + $10 = $40.00. at 20% off, the discount on these books is 40 * .20 = $8.00. So these 3 books will cost $40 - $8 = $32.00. He has spent $42.00 on the two most expensive books, $32.00 on the 3 cheapest books, and also bought a book for $21.00, so his total comes to $42 + $32 + $21 = $95.00.. The answer is: 95.

A farmer has 52 cows. Each cow gives 5 liters of milk a day. How many liters of milk does the farmer get in a week?
Let's think: The amount of milk one cow gives in a week: 5 liters / day * 7 days / week = 35 liters / week. The amount of milk 52 cows give in a week: 52 cows * 35 liters / week / cow = 1820 liters / week.. The answer is: 1820.

Jackson spends 9 hours playing video games and 1/3 that much time studying. If Jackson's grade starts at 0 points and increases by 15 points for every hour he spends studying, what is his grade?
Let's think: First find how many hours he spends studying by dividing the number of hours spent gaming by 3: 9 hours / 3 = 3 hours. Then multiply that quantity by the point increase per hour to find Jackson's grade: 3 hours * 15 points / hour = 45 points.. The answer is: 45.

A farmer hires small trucks to transport his lemons to the markets. The load on a truck may not be more than 900 kilograms. One bag of lemons has a mass of 8 kilograms. If there are 100 bags of lemons, how many more kilograms can still be loaded into the truck?
Let's think:
The total weight of 100 bags of lemons is 100 x 8 = 800 kilograms. So, 900 - 800 = 100 kilograms can still be loaded into the truck.. The answer is: 100.