Question: Lucca has 100 balls and 10 percent of his balls are basketballs. Lucien has 200 balls and 20 percent of them are basketballs. In total how many basketballs do Lucca and Lucien have?
Answer: Lucca has 100 basketballs x (10 / 100) = 10 basketballs. Lucien has 200 basketballs x (20 / 100) = 40 basketballs. Together they have 10 basketballs + 40 basketballs = 50 basketballs. The answer is 50.

Question: Jane is shopping for some fruit. She sees a stand of fruit advertising 10 apples for $2, and another one advertising 5 oranges for $1.50. Assuming there's no price discount for buying in bulk, how much would Jane spend in cents if she bought 12 of the cheaper of the two fruits?
Answer: First, we need to find out which fruit is cheaper individually. We start by figuring out the price for a single apple by performing 200 / 10 = 20 cents per apple. Then we find out the price of an individual orange, by performing 150 / 5 = 30 cents per orange. Since 20<30, the apples are cheaper. To determine the answer, we multiply 20 * 12 = 240 cents. The answer is 240.

Question: Harry's birthday was three weeks after the closing of the school. His three friends decided to contribute an equal amount of money to throw him a party. Harry added $30 to the contribution, making the total contribution three times as much as Harry contributed. Calculate the total amount of money that each of Harry's friends contributed.
Answer: If the total contribution was three times as much as Harry contributed, and Harry contributed $30, the total contribution was 3 * $30 = $90. Since Harry contributed $30, his three friends together contributed $90 - $30 = $60. Since the three friends were contributing an equal amount, each friend contributed $60 / 3 = $20. The answer is 20.

Question: Elias uses a bar of soap every month. If each bar of soap costs $4, how much does he spend on bars of soap in two years?
Answer:
A year is 12 months, so Elias spends 4 * 12 = $48 per year on bars of soap. In two years, he spends 2 * 48 = $96 on bars of soap. The answer is 96.