Question: Ursula earns $8.50 an hour working in a restaurant. She works 8 hours a day. If she works 20 days a month, determine her annual salary.
Answer with step-by-step thinking: Ursula earns 8 x $8.50 = $68 a day. In a month, she earns 20 x $68 = $1360. Therefore, Ursula's annual salary is 12 x $1360 = $16,320.
So the answer is 16320.

Question: How many legs does a spider have if it has two times more than double the number of legs a human has?
Answer with step-by-step thinking: Since humans have two legs, we start by finding out what double that amount is by performing 2 * 2 = 4. Spiders have twice that number, so we multiply 4 * 2 to find 8 legs in total.
So the answer is 8.

Question: A certain kind of wild mushroom has either spots or gills, but never both. Gilled mushrooms are rare, with only one growing for every nine spotted mushrooms that grow. A fallen log had 30 mushrooms growing on its side. How many gilled mushrooms were on the fallen log's side?
Answer with step-by-step thinking:
There is 1 gilled mushroom for every 1 + 9 = 10 mushrooms. Thus, there were 30 / 10 = 3 gilled mushrooms on the fallen log's side.
So the answer is 3.