Question: Nick's cell phone was initially empty but was then charged for 45 minutes and has reached a 25% charge. How much longer must the cell phone be charged to reach 100% charge?
Answer: The ratio between the time charged and the time to be charged is 100 / 25 = 4. To reach 100%, the cell must be charged for 45 minutes * 4 = 180 minutes. Subtracting the 45 minutes that Jimmy already used to charge the cell phone, there are still 180 - 45 = 135 minutes of charging time left. The answer is 135.
[Question]Tony decided he wanted to be an astronaut. He went to college for 4 years to get a degree in science. He then went on to get 2 more degrees in other fields for the same period of time. He also got a graduate degree in physics, which took another 2 years. How many years in total did Tony go to school to be an astronaut?
[Answer]Tony got 3 degrees which each took 4 years, for 3 * 4 = 12 years spent. He then got his graduate degree, which was another 2 years added to the previous total, for 12 + 2 = 14 years in total. The answer is 14.
Q: Joshua and Justin shared $40. Joshua’s share was thrice as much as Justin’s. How much is Joshua's share?
A: The $40 is divided into 1 part for Justin + 3 parts for Joshua = 4 parts. So each part is equal to $40 / 4 = $10. Therefore, Joshua's share is $10 x 3 = $30. The answer is 30.
Question: A club opens up and charges $20 to enter. James buys 2 rounds for his 5 friends. He also buys 6 drinks for himself. Drinks cost $6 each. He decides to eat some food so he orders some fried chicken which costs $14. He leaves a 30% tip on everything he orders. How much did he spend for the night?
Answer: He buys 2 * 5 = 10 drinks for his friends. So he orders 10 + 6 = 16 total drinks. The cost of the drinks was 16 * 6 = $96. So his order came out to 96 + 14 = $110. The tip came out to 110 * .3 = $33. So his order cost 110 + 33 = $143. Adding in the cover charge means it cost 143 + 20 = $163. The answer is 163.
[Question]Stefan goes to a restaurant to eat dinner with his family. They order an appetizer that costs $10 and 4 entrees that are $20 each. If they tip 20% of the total for the waiter, what is the total amount of money that they spend at the restaurant?
[Answer]The total cost of the entrees is 4 * $20 = $80. The total cost of the dinner is $80 + $10 = $90. The tip is $90 * 0.20 = $18. The total cost with tip is $90 + $18 = $108. The answer is 108.
[Question]For football season, Zachary wants to buy a new football, a pair of shorts, and a pair of football shoes. The ball costs $3.75, the shorts cost $2.40, and the shoes cost $11.85. Zachary has $10. How much more money does Zachary need?
[Answer]
The total cost of the ball, the shorts, and the shoes is $3.75 + $2.40 + $11.85 = $18. Zachary needs $18 − $10 = $8 more. The answer is 8.