[Question]Alicia has 20 gumballs. Pedro has that many gumballs plus an additional number of gumballs equal to three times the number Alicia has. They put their gumballs in a bowl, and later Pedro takes out 40% of the gumballs to eat. How many gumballs are remaining in the bowl?
[Answer]If Pedro has three times more gumballs than Alicia, he has 3 * 20 gumballs = 60 gumballs more. In total, Pedro has 20 gumballs + 60 gumballs = 80 gumballs. When they put their gumballs together, the total number of gumballs in the bowl becomes 20 gumballs + 80 gumballs = 100 gumballs. Pedro takes out 40% of the gumballs which is 40 / 100 * 100 gumballs = 40 gumballs. The number of gumballs remaining is 100 gumballs - 40 gumballs = 60 gumballs. The answer is 60.

[Question]There are 11 boys and 13 girls in a class. If 1 boy is added to the class, what percentage of the class are girls?
[Answer]There are a total of 11 + 1 = 12 boys in the class. Hence, there are a total of 12 boys + 13 girls = 25 students in a class. So 13 / 25 x 100% = 52% of the class are girls. The answer is 52.

[Question]Perry wants to buy a new modern bedroom set for $2000. He received $200.00 in gift cards over the holidays that he can use toward the set. The store is currently offering the entire set at 15% off. If he signs up for the store credit card and uses it to buy the set, he will save an additional 10% off on the discounted set. What is the final price of the set?
[Answer]The bedroom set is $2000 and it’s currently 15% off so 2000 * .15 = $300.00 off. So the new price of the set is 2000 - 300 = $1,700.00. He signs up for the credit card so that’s 10% off so .10 * 1700 = $170.00. Now the set is 1700 - 170 = $1,530.00. He has a $200.00 gift card which brings the price to 1530 - 200 = $1,330.00. The answer is 1330.

[Question]Four kids can wash three whiteboards in 20 minutes. How long would it take, in minutes, for one kid to wash six whiteboards?
[Answer]
One kid can wash three whiteboards in 20 * 4 = 80 minutes. One kid can wash six whiteboards in 80 * (6 / 3) = 160 minutes. The answer is 160.