Susan walked to the market to buy five dozen peaches. To carry them home, she brought two identically-sized cloth bags and a much smaller knapsack. Into the knapsack she placed half as many peaches as she placed in each of the two cloth bags. How many peaches did she put in the knapsack? Give the rationale and then the answer.
Let's think step by step. 5 dozen peaches is 5 * 12 = 60 peaches. Let "x" be the number of peaches put into the knapsack. Thus, the total number of peaches is x + (2 * x) + (2 * x) = 60. Simplifying the expression, we see that 5 * x = 60. Dividing each side of the equation by 5, we see that x = 12 peaches,.. The answer is: 12.

A supplier is packing cartons of canned juice. Each carton has 20 cans of juice. Out of the 50 cartons that have been packed, only 40 cartons have been loaded on a truck. How many cans of juice are left to be loaded on the truck? Give the rationale and then the answer.
Let's think step by step. There are 50 - 40 = 10 cartons of canned juice that are left to be loaded on the truck. This is equal to 10 x 20 = 200 cans of juice.. The answer is: 200.

To win a brand new Bible at Tom Sawyer's Sunday school, a pupil has to win 10 yellow tickets; each yellow ticket is obtained by trading in 10 red tickets; each red ticket is obtained by trading in 10 blue tickets; and blue tickets are earned by memorizing two Bible verses. But rather than go to all that trouble, Tom Sawyer has traded various toys and treasures of his with his friends until he has gathered 8 yellow, 3 red, and 7 blue tickets. How many more blue tickets would he need to earn to win a new Bible? Give the rationale and then the answer.
Let's think step by step. A red ticket is equal to 10 blue tickets, and a yellow is equal to ten red tickets, so a yellow ticket is also equal to 10 * 10 = 100 blue tickets. It takes 10 yellow tickets to win a Bible, or 10 * 100 = 1000 blue tickets. Tom has 8 yellow tickets, which are worth 8 * 100 = 800 blue tickets. He also has 3 red tickets, which are worth 3 * 10 = 30 blue tickets. Added with his 7 blue tickets, he has 800 + 30 + 7 = 837 blue tickets' worth of tickets. So he still needs to earn 1000 - 837 = 163 blue tickets.. The answer is: 163.