It takes Emmalyn and her research team, the Polar Bears, 30 minutes to fully navigate around a volcanic island. On Saturday, they decided to start off by rounding the island once. They then re-grouped and planned out the rest of their weekend research schedule. They completed 10 more round that day and then went home. When they came on Sunday, they were able to complete 15 rounds. Calculate the total time, in minutes, the Polar Bears spent circling the island over that weekend.
Let's think: On the first day, they started off doing one round of 30 minutes. The team did ten more rounds on day one which took 10 * 30 = 300 minutes. The total time they took circumnavigating the land on the first day is 300 + 30 = 330 minutes. On the second day, they did 15 rounds, which took 30 minutes each, giving 15 * 30 = 450 minutes. The total number of rounds took 330 + 450 = 780 minutes.. The answer is: 780.

Jacob has been tasked with a project to write up an urban plan proposal that will be used to construct a new city. He uses Pittsburg city as a reference which has 2000 stores, 500 hospitals, 200 schools, and 20 police stations. If the new city should have half the number of stores, twice as many hospitals, 50 fewer schools, and 5 more police stations, what is the total number of buildings required for this project?
Let's think: The number of stores required for the new city is 2000 / 2 = 1000 stores. The number of hospitals required for the new city is 2 * 500 = 1000 hospitals. The number of schools required for the new city is 200 - 50 = 150 schools. The number of police stations required for the new city is 20 + 5 = 25 police stations. The total number of buildings required for this new city project 1000 + 1000 + 150 + 25 = 2175 buildings.. The answer is: 2175.

There are 15 girls and 10 boys in Ms. Smith's class. She divided 375 books equally among them. How many books did all the girls get combined?
Let's think: There are 15 + 10 = 25 students in the class. 375 books were divided equally among them for a total of 375 / 25 = 15 books each. 15 girls will get a total of 15 * 15 = 225 books.. The answer is: 225.

Anais has 30 more toys than Kamari. There are 160 toys altogether. How many toys are there in Kamari's box?
Let's think:
Let's say Kamari has x toys. Anais has x + 30 toys. Combined, Anais and Kamari have a total of x + x + 30 = 160 toys. Combining like terms, we get 2x + 30 = 160. Subtracting 30 from both sides, we get 2x = 130. Dividing both sides by 2, we get x = 65, so the total number of toys that Kamari has is 65.. The answer is: 65.