[Question]Markus is twice the age of his son, and Markus's son is twice the age of Markus's grandson. If the sum of the ages of Markus, his son, and his grandson is 140 years, then how many years old is Markus's grandson?
[Answer]Let "x" be the age of Markus's grandson. If Markus's son is twice the age of Markus's grandson, then Markus's son is 2 * x. If Markus is twice the age of his son, then Markus is 2 * 2 * x. Therefore, if the sum of the ages of Markus, his son, and his grandson is 140 years, then x + (2 * x) + (2 * 2 * x) = 140 years. Simplifying the equation, we see that 7 * x = 140 years. Therefore, the age of Markus's grandson is x = 20 years old. The answer is 20.
Q: Amy bought a 15-foot spool of string to cut up into wicks for making candles.  If she cuts up the entire string into an equal number of 6-inch and 12-inch wicks, what is the total number of wicks she will have cut?
A: 15 feet of string is 15 * 12 = 180 inches long. If for every 6 - inch wick she also cuts a 12 - inch wick, then the pair of wicks are 6 + 12 = 18 inches long. Thus, in 180 inches of string, she can cut 180 / 18 = 10 pairs of wicks. 10 pairs of wicks are a total of 10 * 2 = 20 wicks. The answer is 20.
Question: Noemi lost $400 on roulette and $500 on blackjack. How much money did Noemi begin with if she still had $800 in her purse?
Answer: The total amount of money that she lost is $400 + $500 = $900. If she remained with $900, she initially had $900 + $800 = $1700. The answer is 1700.
[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]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. The answer is 3.
Q: In a store, an Uno Giant Family Card costs $12. When Ivan bought ten pieces, he was given a discount of $2 each. How much did Ivan pay in all?
A: Instead of $12 each, an Uno Giant Family Card costs $12 - $2 = $10 each. Ivan paid $10 x 10 = $100 for the ten pieces Uno Giant Family Card. The answer is 100.
Question: Joseph invested $1000 into a hedge fund. The fund promised a yearly interest rate of 10%. If he deposited an additional $100 every month into the account to add to his initial investment of $1000, how much money will he have in the fund after two years?
Answer:
For the first year, Joseph will have invested $1000 + ($100 * 12) = $2200. The interest calculated for the first year will be $2200 * 10% = $220. The total value of the investment for the first year will be $2200 + $220 = $2420. For the second year, the total invested will be $2420 + ($100 * 12) = $3620. The interest calculated after the second year will be $3620 * 10% = $362. Therefore, Joseph's investment in the mutual fund will be worth $3620 + $362 = $3982. The answer is 3982.