[Question]: Ryan has 40 balls. There are twice as many red balls as blue while the rest are green. If there are 11 blue balls, how many green balls are there?
[Answer]: There are 11 blue x 2 red / blue = 22 red balls. The total number of blue and red balls is 11 blue + 22 red = 33 balls. There are 40 balls - 33 balls = 7 green balls.
So the answer is 7.

[Question]: Mrs. Wilsborough saved $500 to buy concert tickets for her family. She bought 2 VIP tickets at $100 each and 3 regular tickets at $50 each. How much of her savings does Mrs. Wilsborough have after she buys the tickets?
[Answer]: The 2 VIP tickets amount to $100 x 2 = $200. The 3 regular tickets amount to $50 x 3 = $150. Thus, the total cost of the tickets is $200 + $150 = $350. Therefore, Mrs. Wilsborough is left with $500 - $350 = $150 of her savings.
So the answer is 150.

[Question]: Christine makes money by commission rate. She gets a 12% commission on all items she sells. This month, she sold $24000 worth of items. Sixty percent of all her earning will be allocated to her personal needs and the rest will be saved. How much did she save this month?
[Answer]:
This month, Christine earned a commission of 12 / 100 x $24000 = $2880. She allocated 60 / 100 x $2880 = $1728 on her personal needs. Therefore, she saved $2880 - $1728 = $1152 this month.
So the answer is 1152.