[Question]James has 3 fish tanks. 1 of the tanks has 20 fish in it and the other two have twice as many fish each as the first. How many total fish do they have?
[Answer]The second and third tank each have 20 * 2 = 40 fish. So in total there are 20 + 40 * 2 = 100 fish. The answer is 100.

[Question]Travis goes through 2 boxes of cereal a week. If each box costs $3.00 and he eats 2 boxes every week for an entire year, 52 weeks, how much does he spend on cereal?
[Answer]He eats 2 boxes for 52 weeks so he eats 2 * 52 = 104 boxes. Each box costs $3.00 and he buys 104 boxes so he spends 3 * 104 = $312.00. The answer is 312.

[Question]Maryann can pick the lock on a cheap pair of handcuffs in 6 minutes and on an expensive pair of handcuffs in 8 minutes. If Maryann needs to rescue three of her friends who have expensive handcuffs on their hands and cheap handcuffs on their ankles, how long will it take for her to free all of them?
[Answer]First find the total time it takes Maryann to rescue one friend: 6 minutes + 8 minutes = 14 minutes. Then multiply the time to save one friend by the number of friends Maryann needs to save: 14 minutes / friend * 3 friends = 42 minutes. The answer is 42.

[Question]Isaac cut his 30 meters ribbon into 6 equal parts. He then used 4 parts of the ribbon. How many meters of ribbon are not used?
[Answer]
Each part is 30 / 6 = 5 meters long. Since Liam used 4 parts, then he used 5 x 4 = 20 meters of the ribbon. So, 30 - 20 = 10 meters of ribbon is not used. The answer is 10.