Question: Mike wants to buy a new phone. The cost of the phone is $1300. How much more money does Mike need if he already has 40% of the amount he needs?
Answer: Mike already has 40 / 100 * 1300 = $520. This means he needs 1300 - 520 = $780 more, to buy the phone. The answer is 780.
[Question]A YouTube video is 100 hours long. Lila decides to watch it at two times the average speed. Roger, her friend, also watch the same video at the average speed. If they both watched six of the same videos, what's the total number of hours they watched?
[Answer]When Lila watches the video at twice the normal speed, the video takes 100 / 2 = 50 hours. When she watches six such videos, the total number of video hours becomes 50 * 6 = 300 hours. Roger, her friend, watches 6 videos at the normal speed, which is 6 * 100 = 600 video hours. The total number of hours watched by the two is 600 + 300 = 900 hours. The answer is 900.
Q: Javier plays 2 baseball games a week. In each of his first 20 games, he averaged 2 hits. If he has 10 games left, how many hits a game does he have to average to bring his average for the season up to 3 hits a game?
A: There are thirty games in the season because 20 + 10 = 30. He needs to get 90 hits on the year to average 3 hits a game because 30 x 3 = 90. He has 40 hits already because 20 x 2 = 40. He needs 50 hits in the final 10 games because 90 - 40 = 50. He needs to average 5 hits a game because 50 / 10 = 5. The answer is 5.
Question: The population of Port Perry is seven times as many as the population of Wellington. The population of Port Perry is 800 more than the population of Lazy Harbor. If Wellington has a population of 900, how many people live in Port Perry and Lazy Harbor combined?
Answer: Population of Port Perry is 900 * 7 = 6,300. Population of Lazy Harbor is 6,300 - 800 = 5,500. Combined population is 6,300 + 5,500 = 11,800. The answer is 11800.
[Question]Owen bought 12 boxes of face masks that cost $9 per box. Each box has 50 pieces of masks. He repacked 6 of these boxes and sold them for $5 per 25 pieces. He sold the remaining 300 face masks in baggies at the rate of 10 pieces of mask for $3. How much profit did he make?
[Answer]Owen bought 12 boxes for a total of $9 / box x 12 boxes = $108. Six boxes contains 6 boxes x 50 masks / box = 300 face masks. Owen made 300 masks / 25 masks / repack = 12 repacks. So, his revenue for selling those repacked face masks is $5 x 12 repacks = $60. There are 300 masks / 10 masks / baggy = 30 baggies face masks. So, his revenue for that is $3 / baggy x 30 baggies = $90. Hence, his total revenue for all the face masks is $60 + $90 = $150. This gives him a profit of $150 - $108 = $42. The answer is 42.
[Question]Eduardo is a teacher. He taught 3 classes last week while his colleague Frankie taught double what Eduardo teaches. How many classes did Eduardo and Frankie teach in total?
[Answer]
Frankie taught 3 * 2 = 6 classes. Combined, Frankie and Eduardo taught 3 + 6 = 9 classes. The answer is 9.