Question: Brody's calculator can run for 60 hours on a full battery. Brody has used three quarters of its battery up, and he is about to take a two-hour math exam that will require his calculator the whole time. How many hours of battery will Brody's calculator have left?
Answer: Brody's calculator has 60 * 1 / 4 = 60 / 4 = 15 hours of battery left. After his 2 - hour math exam, Brody's calculator will have 15 - 2 = 13 hours of battery left. The answer is 13.
[Question]An employee makes 30 dollars an hour for the first 40 hours in the workweek and an additional 50% for every hour above 40 in the week. If he works 6 hours for the first 3 days in the workweek and twice as many hours per day for the remaining 2 days, how much money did he make?
[Answer]His overtime pay per hour is 30 * 1.5 = $45 per hour. He works 6 * 2 = 12 hours per day for the last two days. He works 6 + 6 + 6 + 12 + 12 = 42 hours. He gets 42 - 40 = 2 hours of overtime. He makes 40 * 30 + 2 * 45 = $1290 for the week. The answer is 1290.
Q: Olaf collects colorful toy cars. At first, his collection consisted of 150 cars. His family, knowing his hobby, decided to give him some toy cars. Grandpa gave Olaf twice as many toy cars as the uncle. Dad gave Olaf 10 toy cars, 5 less than Mum. Auntie gave Olaf 6 toy cars, 1 more than the uncle. How many toy cars does Olaf have in total, after receiving all these gifts?
A: Dad gave Olaf 10 toy cars,. Mom has given Olaf 5 more toy cars than Dad, so 10 + 5 = 15 toy cars. Auntie gave Olaf 6 toy cars,. Uncle has given 1 less toy than Auntie, so 6 - 1 = 5 toy cars. Grandpa gave Olaf 2 * 5 = 10 toy cars. All the family together gave Olaf 10 + 15 + 6 + 5 + 10 = 46. Adding the cars Olaf already had, Olaf's collection has 150 + 46 = 196 cars. The answer is 196.
Question: Fabian is shopping at a nearby supermarket. He wants to buy 5 kilograms of apples, 3 packs of sugar, and 500 grams of walnuts. One kilogram of apples costs $2, and one kilogram of walnuts costs $6. One pack of sugar is $1 cheaper than one kilogram of apples. How much Fabian needs to pay for the items he wants to buy?
Answer: The apples cost Fabian 5 kg * $2 / kg = $10. For the walnuts Fabian needs to pay 0.5 kg * $6 = $3. One pack of sugar costs $2 - $1 = $1. So Fabian will pay $1 / pack * 3 = $3 for sugar. In total, Fabian needs to pay $10 + $3 + $3 = $16. The answer is 16.
[Question]Janet starts driving across a lake in a speedboat going 30 miles per hour. Her sister follows in a sailboat that has a speed of 12 miles per hour. If the lake is 60 miles wide, how long does Janet have to wait on the other side for her sister to catch up?
[Answer]First find how long it takes Janet to cross the lake: 60 miles / 30 miles / hour = 2 hours. Then find how long it takes her sister to cross the lake: 60 miles / 12 miles / hour = 5 hours. Then subtract Janet's travel time from her sister's travel time to find the difference: 5 hours - 2 hours = 3 hours. The answer is 3.
[Question]Arthur knows that he needs to finish 800 pages of reading over the summer. He has read 80% of a 500-page book and 1/5 of a 1000 page book. How many more pages does he need to reach to meet his goal?
[Answer]
He read 400 pages from the 500 page book because 500 x .8 = 400. He read 200 pages from the 1000 page book because 1000 x (1 / 5) = 200. He has read 600 pages in total. He needs to read 200 more pages to reach 800 pages because 800 - 600 = 200. The answer is 200.