Reasoning and answer: 16 x 3 / 4 = 12 boys brought gifts. So, 16 - 12 = 4 boys did not bring gifts. 14 x 6 / 7 = 12 girls brought gifts. So, 14 - 12 = 2 girls did not bring gifts. Therefore, a total of 4 boys + 2 girls = 6 people did not bring gifts.
The answer: 6
What was the question?
Question: Sixteen boys and 14 girls attended Simon's birthday party. Three-fourths of the boys and 6/7 of the girls brought gifts. How many of those who attended did not bring gifts?

Reasoning and answer: The international charge cost $3.50 x 10 = 35. Therefore, Emmanuel's bill for December is $175 + 35 = $210.
The answer: 210
What was the question?
Question: Emmanuel will stay in Guam in December for 10 days in which he has to use international data that would cost $3.50 per day. Emmanuel has been paying $175 per month for his regular plan. How much in all will be Emmanuel's charges for December?

Reasoning and answer: If Selma has fifty marbles, then Merill and Elliot together have 50 - 5 = 45 marbles. We'll assume the number of marbles that Elliot has is x. If Merill has twice as many marbles as Elliot, then the total number of marbles that Merill and Elliot have together is 2x + x = 45 marbles. This translates to 3x = 45. The number of marbles that Elliot has is x = 45 / 3. This means Elliot has x = 15 marbles. Since Merill has twice as many marbles as Elliot, Merill has 2 * 15 = 30 marbles.
The answer: 30
What was the question?
Question:
Merill has twice as many marbles as Elliot and the two of them together have five fewer marbles than Selma. If Selma has fifty marbles, how many marbles does Merill have?