Answer this question:In the second hour of a storm it rains 7 inches more than twice the amount it rained the first hour. The total amount of rain in the first two hours is 22 inches. How much did it rain in the first hour?
Let x be the amount of rain in the first hour. It rained 2x + 7 inches in the second hour. x + 2x + 7 = 22. 3x + 7 = 22. 3x = 15. x = 5 inches.
The answer is 5.

Answer this question:Aliens and Martians have different numbers of limbs. Aliens have three arms and eight legs, while Martians have half as many legs and twice as many arms. How many more limbs will five aliens have than five Martians?
Martians have 2 * 3 = 6 arms each. They have 8 / 2 = 4 legs each. Five martians will have 5 * 6 + 5 * 4 = 30 + 20 = 50 limbs. Five aliens will have 5 * 3 + 5 * 8 = 15 + 40 = 55 limbs. Five aliens will have 55 - 50 = 5 more limbs than five Martians.
The answer is 5.

Answer this question:There are 20 boys and 11 girls in the second grade and twice that number in the third grade. How many students are in grades 2 and 3?
There are 20 + 11 = 31 students in second grade. There are 31 x 2 = 62 students in third grade. In total, there are 31 + 62 = 93 students.
The answer is 93.

Answer this question:The movie theater sells matinee tickets for $5, evening tickets for $12, and 3D tickets for $20. If they sell 200 matinee tickets, 300 evening tickets and 100 3D tickets, how much money do they make in total?
First find the total revenue from the matinee tickets: $5 / ticket * 200 tickets = $1000. Then find the total revenue from the evening tickets: $12 / ticket * 300 tickets = $3600. Then find the total revenue from the 3D tickets: $20 / ticket * 100 tickets = $2000. Then add the cost of each group of tickets to find the total cost: $1000 + $3600 + $2000 = $6600.
The answer is 6600.