Q: 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?
A: 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.
Question: Last month, you borrowed $100 from your friend. If you promise to pay her today, how much will you give to your friend if both of you agreed to return the money with a 10% increase?
Answer: The increase is $100 x 10 / 100 = $10. So you have to give $100 + $10 = $110 to your friend today. The answer is 110.
[Question]Kim drinks a 1.5-quart bottle of water. She then drinks a 12 ounce can of water. How many ounces of water did she drink?
[Answer]The bottle was 1.5 * 32 = 48 ounces. So she drinks 48 + 12 = 60 ounces of water. The answer is 60.
Q: 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?
A: 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: A mother buys a box of sweets. She kept 1/3 of the sweets and divided the rest between her 3 children. The eldest got 8 sweets while the youngest got half as many. If there are 27 pieces of sweets in the box, how many sweets did the second child gets?
Answer: The mother kept 27 x 1 / 3 = 9 pieces of sweets. So there were 27 - 9 = 18 sweets that were divided between the 3 children. The youngest child got 8 / 2 = 4 sweets. So the eldest and the youngest got a total of 8 + 4 = 12 sweets. Therefore, the second child gets 18 - 12 = 6 sweets. The answer is 6.
Q: Carly is making burgers for a neighborhood BBQ. Each burger needs to be cooked for 4 minutes on each side. Carly can fit 5 burgers on the grill at once. If half her 30 guests want 2 burgers and the other half each want 1, how long will it take Carly to cook all the burgers?
A:
First find half the number of guests at Carly's party: 30 guests / 2 = 15 guests. Then multiply that number by 2 for the number of burgers half the guests want: 15 guests * 2 burgers / guest = 30 burgers. Then add the 15 burgers for the 15 guests who only want 1 to find the total number of burgers: 30 burgers + 15 burgers = 45 burgers. Then divide the total number of burgers by the number of burgers Carly can cook at once to find the number of batches she cooks: 45 burgers / 5 burgers / batch = 9 batches. Then multiply the number of sides per burger by the cooking time per side to find each burger's total cook time: 4 minutes / side * 2 sides = 8 minutes. Finally, multiply each batch's cook time by the number of batches to find the total cook time: 8 minutes / batch * 9 batches = 72 minutes. The answer is 72.