Q: Hannah bought a new washing machine for $100 and a dryer that costs $30 less. Hannah got a 10% discount for buying two appliances. How much did Hannah pay for the two appliances after the discount?
A: The dryer costs $100 - $30 = $70. So the washing machine and dryer cost $100 + $70 = $170. Hannah got $170 x 10 / 100 = $17 discount. Thus, Hannah paid $170 - $17 = $153. The answer is 153.
Question: Out of 480 employees, 10% got a salary increase while 20% got a travel allowance increase. How many employees did not get any increase?
Answer: 480 x 10 / 100 = 48 employees got a salary increase. 480 x 20 / 100 = 96 employees got a travel allowance increase. So a total of 48 + 96 = 144 employees got an increase. Therefore, 480 - 144 = 336 employees did not get any increase. The answer is 336.
[Question]Yasmin deposited a $50 birthday check from her grandmother in her bank account. The check was worth a quarter of her new balance after the check money is added. How many dollars were in her account before she deposited the check?
[Answer]The $50 check is worth 1 / 4 of Yasmin’s new balance, so her new balance is 50 * 4 = $200. Thus, Yasmin had 200 - 50 = $150 in her account before she deposited the check. The answer is 150.
Q: Chris buys 2 and a half dozen donuts on his way to work to share with his co-workers. While driving, he eats 10% of the donuts. Once inside, he grabs another 4 donuts for his afternoon snack. How many donuts are left for his co-workers?
A: He buys 2 and a half dozen donuts so that's 2.5 * 12 = 30 donuts. He eats 10% of the donuts on his way to work so he eats .10 * 30 = 3 donuts. He bought 30 donuts and ate 3 so that leaves 30 - 3 = 27 donuts. Once inside, he grabs another 4 donuts of his afternoon snack so that leaves 27 - 4 = 23 donuts for his co - workers. The answer is 23.
Question: There are 30 players on a football team. The coach has 8 liters of water. She pours 200 milliliters of water for every player so they can get hydrated. Unfortunately, there was a water spill and 250ml of water was spilled. How much water was left over?
Answer: The coach has 8 liters * 1000 ml / liter = 8,000 ml of water. She pours 200 ml / player x 30 players = 6,000 ml of water in total for all the athletes. The water spill means 6,000 ml + 250 ml = 6,250 ml of water was used. There was 8,000 ml - 6,250 ml = 1,750 ml of water left. The answer is 1750.
Q: Vinny weighed 300 pounds then lost 20 pounds in the first month of his diet. He continued his diet but each month, he lost half as much weight as he had lost in the previous month. At the start of the fifth month of his diet, he worked harder to lose extra weight then decided to end his diet. If Vinny weighed 250.5 pounds at the end of his diet, how many pounds did he lose throughout the fifth month?
A:
In the second month, Vinny lost half as much as he had the first month, so he lost 20 pounds / 2 = 10 pounds. In the third month, he again lost half as much which was 10 pounds / 2 = 5 pounds. And in the fourth month, he lost 5 pounds / 2 = 2.5 pounds. So in total, Vinny lost 20 + 10 + 5 + 2.5 = 37.5 pounds in the first four months. Over his entire diet, he had lost 300 – 250.5 = 49.5 pounds. So in the fifth month, Vinny must have lost 49.5 pounds total loss – 37.5 pounds loss in the first four months = 12 pounds. The answer is 12.