Justin needs to collect one flower for each classmate that is in his 2nd-grade class. It takes him on average 10 minutes to find a flower he likes. He has been gathering for 2 hours. Assuming he has lost 3 of the flowers he initially gathered, how many more minutes does he need to look if he has 30 classmates?
Let's think: If he gathers for 2 hours, the number of minutes gathering is 2 * 60 minutes per hour = 120 minutes of gathering flowers. Gathering for 120 minutes / 10 minutes per flower = 12 flowers gathered. If he gathers 12 flowers initially but lost 3, he has 12 - 3 = 9 flowers gathered and kept. Since he has 30 classmates total and has 9 flowers, he needs to gather 30 - 9 = 21 more flowers. Assuming it takes 10 minutes per flower, it will take him 10 * 21 = 210 minutes to gather the remaining 21 flowers needed.. The answer is: 210.

Macy has a goal of running a total of 24 miles per week. If she runs 3 miles per day, how many miles does Macy have left to run after 6 days so that she could meet her goal?
Let's think: In 6 days, Macy is able to run 3 x 6 = 18 miles. Therefore, she has 24 – 18 = 6 miles left to run to meet her goal.. The answer is: 6.

Keaton has a farm of oranges and apples. He can harvest his oranges every 2 months and can sell the harvest for $50. He can harvest his apples every 3 months and can sell this harvest for $30. How much money can Keaton earn every year?
Let's think: Keaton can harvest his oranges every year is 12 / 2 = 6 times. So the total money he earns for his oranges every year is $50 x 6 = 300. He can harvest his apples 12 / 3 = 4 times in a year. So the total money he earns for the apple in a year is $30 x 4 = 120. Therefore, the total money he earns for his oranges and apples is $300 + $120 = $420.. The answer is: 420.

A child is making a 5-level pyramid by stacking some blocks. In the first row, he has 9 blocks. For the next rows, he has 2 less than the blocks he has from its bottom row. How many blocks did he use in all?
Let's think:
On the second row, he used 9 - 2 = 7 blocks. On the third row, he used 7 - 2 = 5 blocks. On the fourth row, he used 5 - 2 = 3 blocks. On the fifth row, he used 3 - 2 = 1 block. Therefore, he used a total of 9 + 7 + 5 + 3 + 1 = 25 blocks.. The answer is: 25.