Q: On Friday, Markeesha sold 30 boxes of crackers for her scout troop's fundraiser. On Saturday, she sold twice as many as on Friday. On Sunday, she sold 15 fewer than Saturday. How many boxes did she sell over the three days?
A: On Saturday, she sold 2 * 30 = 60 boxes. On Sunday, she sold 60 - 15 = 45 boxes. She sold a total of 30 + 60 + 45 = 135. The answer is 135.
Question: Colbert is building a treehouse out of wooden planks. The treehouse needs 200 wooden planks. A quarter of these planks come from Colbert’s storage, half of these planks come from Colbert’s parents, 20 planks come from Colbert’s friends and he buys the rest from the store. How many planks of wood does he need to buy from the store to finish his treehouse?
Answer: In Colbert’s storage, there are 200 wooden planks / 4 = 50 wooden planks. From his parents, there are 200 wooden planks / 2 = 100 wooden planks. So in total, Colbert has not had to buy 50 wooden planks from storage + 100 wooden planks from his parents + 20 wooden planks from his friends = 170 wooden planks. He therefore still needs to buy 200 needed wooden planks – 170 owned wooden planks = 30 wooden planks. The answer is 30.
[Question]Susan has 3 fish tanks to fill. 1 fish tank contains 7 goldfish and 8 beta fish. The second fish tank contains twice as many fish as the first tank and the third fish tank has a third of the number of fish in the second fish tank. How many fish are in the third fish tank?
[Answer]In the first fish tank, there are 7 goldfish + 8 beta fish = 15 fish. The second fish tank therefore has 15 fish in the first tank * 2 = 30 fish. So the third tank has 30 fish in the second fish tank / 3 = 10 fish. The answer is 10.
Q: Harper needs to buy teacher appreciation gifts for her children’s teachers. Her son has 3 different teachers and her daughter has 4. If she spent $70 on gifts, how much did each gift cost?
A: Her son has 3 teachers and her daughter has 4, so together they have 3 + 4 = 7 teachers. Harper has already spent $70 on 7 gifts, so she spent $70 / 7 = $10 per gift. The answer is 10.
Question: The tripodasaurus has three legs. In a flock of tripodasauruses, there is a total of 20 heads and legs. How many tripodasauruses are in the flock?
Answer: Each animal has 1 + 3 = 4 total heads and legs. Then there are 20 / 4 = 5 in the flock. The answer is 5.
Q: A farm has 5 less than 9 times the amount of hens as roosters. If there are 75 total chickens, how many hens are there?
A:
Let x represent the number of roosters. Number of hens:9x - 5. Total:9x - 5 + x = 75. 10x - 5 = 75. 10x = 80. x = 8. Number of hens: 9(8) - 5 = 67. The answer is 67.