Question: John buys 2 packs of index cards for all his students. He has 6 classes and 30 students in each class. How many packs did he buy?
Answer: John has 6 * 30 = 180 students. So he bought 180 * 2 = 360 packs. The answer is 360.

Question: Billy buys a 12 pack of soda from the store. If he has twice as many brothers as sisters, and he has 2 sisters, how many sodas can he give to each of his siblings if he wants to give out the entire 12 pack while giving each the same number?
Answer: First, we need to determine how many siblings Billy has. To do this, we perform 2 * 2 = 4 brothers, as he has 2 sisters and twice as many brothers as sisters. Then we divide the total number of sodas in the 12 pack, which is 12, by the number of siblings, performing 12 / 6 = 2 cans per person. The answer is 2.

Question: Sally is selling boxes of crackers for her scout troop's fund-raiser. If she sells 50% more on Sunday than she sold on Saturday, then she'll have sold a total of 150 boxes on the two days. How many boxes did she sell on Saturday?
Answer: Let S be the number of boxes sold on Saturday. S + 1.5S = 150. 2.5S = 150. S = 60. Sally sold 60 boxes on Saturday. The answer is 60.

Question: A loaf of bread was sliced into 15. Ten friends bought 4 loaves of bread. If they all eat all 4 loaves equally, how many slices of bread did each of them eat?
Answer:
There are 15 x 4 = 60 slices of bread in 4 loaves of bread. Hence, each of them ate 60 / 10 = 6 slices of bread. The answer is 6.