Lou Senior took 3 cookies out of the cookie jar and ate them. Since he didn't get caught by his wife, he went back the next day and took another 3 cookies out of the jar. But after eating just one of the cookies, he felt guilty about it and put the other two cookies back. His son, Louie Junior saw that his Dad was eating cookies. So, Louie Junior took seven cookies out of the jar and hid them in his bedroom for later. The next morning, Debra, Lou's wife looked into the cookie jar and reacted by accusing her husband of eating half of the cookies out of the cookie jar. How many cookies remained in the jar?
Let's think: Lou Sr 3 cookies from the jar, then another three, but then put two back, for a total of 3 + 3 - 2 = 4 cookies removed. Louie Jr took seven more out of the jar, for a total of 4 + 7 = 11 cookies removed. If Debra thought half were gone, then the number of missing cookies would equal the number of cookies that remain, or 11 missing = 11 remaining cookies.. The answer is: 11.

Bill is trying to control the pests in his garden. Each spider he introduces eats 7 bugs, and each time he sprays the garden he reduces the total bug population to 80% of what it was previously. If the garden has 400 bugs to start, and Bill sprays once and introduces 12 spiders, how many bugs are left?
Let's think: First find the total bug population after spraying: 80% * 400 bugs = 320 bugs. Then find the total number of bugs each spider eats: 12 spiders * 7 bugs / spider = 84 bugs. Then subtract that number from the number of bugs left after spraying to find final number of bugs: 320 bugs - 84 bugs = 236 bugs.. The answer is: 236.

There are 192 soaps in a package. They put them in 2 big boxes. If each box contains 6 packages, how much soap do the 2 boxes contain in total?
Let's think: Find how many soaps are in 1 box by multiplying the number of soaps per package by the number of packages per box: 192 * 6 = 1152 soaps. Then find how many soaps 2 boxes contain by multiplying the number of boxes by the number of soaps per box: 1152 * 2 = 2304 soaps.. The answer is: 2304.

Joey studies for his SAT exams 2 hours per night 5 nights a week. On the weekends, he studies 3 hours a day. If his SAT exam is 6 weeks away, how much time will Joey spend studying?
Let's think:
Joey studies 2 hours a night 5 nights a week so that's 2 * 5 = 10 hours. He studies 3 hours a day on the weekends so that's 3 * 2 = 6 hours. In one week, Joey studies 10 + 6 = 16 hours. He has 6 weeks till his exams and he studies for 16 hours a week so that's 6 * 16 = 96 hours of studying.. The answer is: 96.