Answer this question:John and Anna bought some eBook readers. John bought 15 eBook readers less than Anna did. Unfortunately, John lost 3 eBook readers. If Anna bought 50 eBook readers, how many eBook readers do they have altogether?
John bought 50 - 15 = 35 eBook readers. John has 35 - 3 = 32 eBook readers after losing some. Together they have 50 + 32 = 82 eBook readers.
The answer is 82.

Answer this question:Tobias went to a swimming pool for 3 hours. Swimming every 100 meters took him 5 minutes, but every 25 minutes he had to take a 5-minute pause. How many meters did Tobias swim during his visit to the swimming pool?
We need to count the sequences that Tobias made, which consist of 25 minutes of swimming and a 5 - minute pause, so one sequence lasts for 25 minutes + 5 minutes = 30 minutes / sequence. Three hours is 3 hours * 60 minutes / hour = 180 minutes, so he is able to make 180 minutes / 30 minutes / sequence = 6 sequences. Therefore Tobias needs to make 6 pauses within these 6 sequences, which will last for 6 pauses * 5 minutes / pause = 30 minutes. During three hours, he is going to swim for 180 minutes - 30 minutes = 150 minutes. Therefore Tobias can make 100 meters for 150 minutes / 5 minutes / 100 meters = 3 times. So he was able to swim 30 times * 100 meters / time = 3000 meters in total.
The answer is 3000.

Answer this question:In a bowl of fruit, there are 2 bananas, twice as many apples, and some oranges. In total there are 12 fruits in the bowl. How many oranges are in the bowl?
In the bowl, there are twice more apples than bananas, so there are 2 * 2 = 4 apples. That means there are 12 - 4 - 2 = 6 oranges in the bowl.
The answer is 6.

Answer this question:Leah bought 3 boxes of birdseed. When she went to put them away, she discovered that she already had 5 boxes in the pantry. Her parrot eats 100 grams of seeds each week and her cockatiel eats 50 grams of seeds in a week. If each box of birdseed contains 225 grams, for how many weeks can she feed her birds without going back to the store?
In a week, her birds eat a total of 100 grams + 50 grams = 150 grams of seed each week. Leah has a total of 3 + 5 = 8 boxes of birdseed. The boxes of birdseed contain a total of 8 * 225 grams = 1800 grams. This is enough birdseed to feed her pets for 1800 / 150 = 12 weeks.
The answer is 12.