Question: Maggie picked 40 apples. Kelsey picked 28 apples. Layla picked some apples, too. The three averaged 30 apples picked. How many did Layla pick?
Answer: Together, they picked 30 * 3 = 90. There are 40 + 28 = 68 accounted for. Then Layla picked 90 - 68 = 22. The answer is 22.
[Question]Oliver has 10 $20 and 3 $5 bills. William has 15 $10 and 4 $5 bills. How much more money does Oliver have than William?
[Answer]Oliver's $20 bills amount to $20 x 10 = $200. Oliver's $5 bills amount to $5 x 3 = $15. So, Oliver has a total of $200 + $15 = $215. William's $10 bills amount to $10 x 15 = $150. William's $5 bills amount to $5 x 4 = $20. So, William has a total of $150 + $20 = $170. Therefore, Oliver has $215 - $170 = $45 more than William. The answer is 45.
Q: Angelina is 4 years older than Justin is now. In 5 years, Angelina will be 40 years old. Calculate the age of Justin currently.
A: In five years, Angelina will be 40 years old, meaning currently she is 40 - 5 = 35 years old. Since Angelina is 35 years old right now, and she is four years older than Justin, it means Justin is 35 - 4 = 31 years old. The answer is 31.
Question: Madeline has 5 boxes with 24 crayons in each. She noticed that 5/8 of the crayons in the 2 boxes were not yet used. In the 2 other boxes, only 2/3 of the crayons were used while the last box was not entirely used. How many unused crayons did Madeline have?
Answer: Two boxes of crayons have 24 x 5 / 8 = 15 unused crayons from each box. So, a total of 15 x 2 = 30 unused crayons are in the two boxes. For the other 2 boxes, there are 24 x 2 / 3 = 16 used crayons from each box. Hence, there are 24 - 16 = 8 unused crayons. So, a total of 8 x 2 = 16 unused crayons are in the other two boxes. Therefore, Madeline has a total of 30 + 16 + 24 = 70 unused crayons. The answer is 70.
[Question]There are 66 goats at a farm and twice as many chickens. If the number of ducks is half of the total of the goats and chickens, and the number of pigs is a third of the number of ducks, how many more goats are there than pigs?
[Answer]There are 66 x 2 = 132 chickens. There are 66 + 132 = 198 goats and chickens. There are are 198 / 2 = 99 ducks. There are 99 / 3 = 33 pigs. There are 66 - 33 = 33 more goats than pigs. The answer is 33.
[Question]George collected 50 marbles in white, yellow, green, and red. Half of them are white, and 12 are yellow. There are 50% fewer green balls than yellow balls. How many marbles are red?
[Answer]
Half of the marbles are white, so there are 50 / 2 = 25 white marbles. Green marbles are only 50% as many as yellow marbles, so there are 50 / 100 * 12 = 6 green marbles. So currently we know that we have 25 + 12 + 6 = 43 marbles. The rest are red, so there are 50 - 43 = 7 red marbles. The answer is 7.