Answer this question:Cornelia likes to travel. She visited already 42 different countries. 20 of them were in Europe and 10 in South America. From the rest of the countries, only half of them were in Asia. How many Asian countries has Cornelia visited?
Cornelia visited 42 countries - 20 countries - 10 countries = 12 countries which were outside of Europe and South America. Half of those 12 countries were in Asia, so there were 12 countries / 2 = 6 Asian countries that Cornelia visited.
The answer is 6.

Answer this question:John builds a toy bridge to support various weights. It needs to support 6 cans of soda that have 12 ounces of soda. The cans weigh 2 ounces empty. He then also adds 2 more empty cans. How much weight must the bridge hold up?
The weight of soda was 6 * 12 = 72 ounces. It had to support the weight of 6 + 2 = 8 empty cans. The weight of the empty cans is 8 * 2 = 16 ounces. So it must support 72 + 16 = 88 ounces.
The answer is 88.

Answer this question:Steve makes 40000$ a year as a teacher. He loses 20 percent to taxes, 10 percent to healthcare, and 800$ to local union dues. How much money does Steve take home?
Taxes:40000(.20) = 8000$. Healthcare:40000(.10) = 4000$. Dues:800$. Total:40000 - 8000 - 4000 - 800 = 27,200$.
The answer is 27200.

Answer this question:Bert bought some unique stamps for his collection. Before the purchase, he had only half the stamps he bought. If he bought 300 stamps, how many stamps does Bert have in total after the purchase?
Before the purchase, Bert had 300 * 1 / 2 = 150 stamps. So after the purchase he has 300 + 150 = 450 stamps.
The answer is 450.