Step-by-step reasoning process: There are 24 / 2 = 12 blue marbles. Blue and red marbles make up 12 + 6 = 18 of the 24 marbles. Thus, there are 24 - 18 = 6 orange marbles.
The question and answer:
Question and answer: There are 24 marbles in a jar. Half are blue. There are 6 red marbles. The rest of the marbles are orange. How many orange marbles are there?
The answer is 6

Step-by-step reasoning process: On Monday, he spent half of $80 leaving him with $80 - (1 / 2) * $80 = $40. On Tuesday, he spent 1 / 5th of $40 leaving $40 - (1 / 5) * 40 = $32. On Wednesday, he spent 3 / 8ths of $32 leaving $32 - (3 / 8) * $32 = $20.
The question and answer:
Question and answer: Bob started out the week with $80. On Monday alone, he spent half the money. On Tuesday, he spent one-fifth of the amount left from Monday. On Wednesday, he spent 3/8ths of the amount left from Tuesday. How much does he have left now?
The answer is 20

Step-by-step reasoning process: The whole family consists of 4 + 2 + 1 = 7 persons. The entrance ticket to the park costs the same for every person, so the family would need to pay 7 * 5 = $35 to enter. For visiting the attraction the tickets would cost 4 * 2 = $8 for the kids. Their parents and grandmother would need to pay 3 * 4 = $12. That means a total cost for the family standing at 35 + 8 + 12 = $55.
The question and answer:
Question and answer:
In the city park, there are various attractions for kids and their parents. The entrance ticket to the park is $5, but for each attraction, you have to pay separately - such ticket costs $2 for kids and $4 for parents. How much would a family with 4 children, their parents, and her grandmother pay for visiting the park, and one attraction inside?
The answer is 55