In 2005, Simon was 16 + 24 = 40 years old. There are 2010 - 2005 = 5 years between 2005 and 2010. In 2010 Simon would be 40 + 5 = 45 years old.
The answer: 45
Reverse engineering the question: Jorge is 24 years younger than Simon. In 2005, Jorge is 16 years old. In 2010, how old would Simon be?

First find the percentage of milk bottles that are fresh: 100% - 20% = 80%. Then find the percentage of the eggs that aren't rotten: 100% - 60% = 40%. Then find the fraction of the flour canisters that don't have weevils: 1 - 1 / 4 = 3 / 4. Divide the numerator of this fraction by the denominator and multiply by 100% to convert from a fraction to a percent: 3 / 4 * 100% = 75%. Then multiply the probability that each ingredient is good to find the probability they all are: 75% * 80% * 40% = 24%.
The answer: 24
Reverse engineering the question: Jackson is making pancakes with three ingredients: flour, milk and eggs. 20% of the bottles of milk are spoiled and the rest are fresh. 60% of the eggs are rotten. 1/4 of the cannisters of flour have weevils in them. If Jackson picks a bottle of milk, an egg and a canister of flour at random, what are the odds all three ingredients will be good?

She drinks 1 / 5 of a bottle of sparkling water every night so over an entire year she drinks .2 * 365 = 73 bottles of sparkling water. Every bottle costs $2.00 and she drinks 73 bottles a year so she spends 2 * 73 = $146.00 a year on sparkling water.
The answer: 146
Reverse engineering the question: Mary Anne drinks 1/5 of a bottle of sparkling water every night at dinner. If each bottle costs her $2.00, how much does she spend on sparkling water every year?

The club has a female group which has twice as many members as the male group, so there are 2 + 1 = 3 groups in the club. There are 18 members in the club, which means there are 18 / 3 = 6 members per group. Since the number of female members consists of two groups, then there are 6 * 2 = 12 female members in the club.
The answer: 12
Reverse engineering the question:
In a glee club, there are two times as many female than male members. How many female members are there if there are 18 members in the club?