Q: Marion's bike cost $356. Stephanie's bike is worth twice as much. What is the total price of their bikes?
A: Stephanie's bike costs $356 * 2 = $712. So, their bikes cost $356 + $712 = $1068 in total. The answer is 1068.

Q: There are 9 bicycles and 16 cars in the garage. How many wheels are there in the garage?
A: There are 9 bicycles x 2 wheels / bicycle = 18 bicycle wheels. There are 16 cars x 4 wheels / car = 64 car wheels. In total there are 18 bicycle wheels + 64 car wheels = 82 wheels in the garage. The answer is 82.

Q: Zander collected 100 stickers. He gave some of his stickers to his two friends, Andrew and Bill. Andrew received 1/5 of Zander's stickers, while Bill received 3/10 of the remaining stickers. How many stickers did Andrew give to his two friends?
A:
Andrew received 100 x 1 / 5 = 20 stickers. So, there were 100 - 20 = 80 stickers left. Bill received 80 x 3 / 10 = 24 stickers. Therefore, Andrew gave away 20 + 24 = 44 stickers. The answer is 44.