We have a question: A farmer is checking his fields to make sure all of his crops are growing as they should. Rows of corn stalks should produce 9 corn cobs each, and rows of potatoes should produce 30 potatoes each. As he’s checking crop quality, he notices that there are more pests than usual and they have destroyed some of his crops. He thinks that half of his crops have been destroyed by the pests. If the farmer has 10 rows of corn stalks and 5 rows of potatoes, how many crops does the farmer still have?
And an answer: 120
So how you got the answer?
The farmer had a total of 10 rows of corn stalks * 9 corn cobs each = 90 corn cobs. He also had a total of 5 rows of potatoes * 30 potatoes each = 150 potatoes. This was a total of 90 corn cobs + 150 potatoes = 240 crops. Because pests destroyed half of his crops, he now has 240 crops * 0.5 = 120 crops.

We have a question: Rachel drinks 2 glasses of water on Sunday and 4 glasses of water on Monday. Then she drinks 3 glasses of water every day for the next 4 days. One glass of water is 10 ounces of water. If Rachel wants to drink a total of 220 ounces of water in the week (Sunday to Saturday), how many glasses of water should she drink on Saturday?
And an answer: 4
So how you got the answer?
From Sunday and Monday, Rachel drinks 2 + 4 = 6 glasses of water. From Tuesday to Friday, Rachel drinks 3 * 4 = 12 glasses of water. The total glasses of water she drinks from Sunday to Friday is 6 + 12 = 18 glasses of water. The total ounces of water she drinks from Sunday to Friday is 18 * 10 = 180 ounces. The ounces of water she should drink on Saturday is 220 - 180 = 40 ounces. The glasses of water she should drink on Saturday is 40 / 10 = 4 glasses of water.

We have a question: There are 6 people going on an airplane trip. They each have 5 bags of luggage. Each of their bags weighs the maximum weight allowed, 50 pounds. The airplane can hold a total luggage weight of 6000 pounds. How many more bags at maximum weight can the plane hold?
And an answer: 90
So how you got the answer?
Each person brought 5 bags * 50 pounds per bag = 250 pounds per person. There are 6 people * 250 pounds per person = 1500 pounds of luggage on the plane. The plan can hold 6000 pounds - 1500 pounds = 4500 pounds of luggage space left. The plane can hold an additional 4500 pounds / 50 pounds per bag = 90 pieces of luggage.