Answer this question:Mrs. Fredrickson has 80 chickens where 1/4 are roosters and the rest are hens. Only three-fourths of those hens lay eggs. How many chickens does Mr. Fredrickson have that do not lay eggs?
Mrs. Fredrickson has 80 x 1 / 4 = 20 roosters. So he has 80 - 20 = 60 hens. Only 60 x 3 / 4 = 45 of the hens lay eggs. Thus, 60 - 45 = 15 hens do not lay eggs. Therefore, Mr. Fredrickson has a total of 15 hens + 20 roosters = 35 chickens that do not lay eggs.
The answer is 35.

Answer this question:Martiza is studying for the citizenship test. There are 60 questions on the test. 30 are multiple-choice and 30 are fill-in-the-blank. It takes her 15 minutes to learn each multiple-choice question and 25 minutes each to learn the fill-in-the-blank questions. How many hours will she need to study before she is ready for the test?
The multiple - choice questions will take her a total of 30 * 15 = 450 minutes. The fill - in - the - blank questions will take her a total of 25 * 30 = 750 minutes. The test will take her a total of 450 + 750 = 1200 minutes to study for. Therefore, Martiza will need to study a total of 1200 / 60 minutes = 20 hours.
The answer is 20.

Answer this question:Tony drives a car that gets 25 miles to the gallon. He drives 50 miles round trip to work 5 days a week. His tank holds 10 gallons. He begins the week with a full tank and when he runs out he fills up at the local gas station for $2 a gallon. How much money does Tony spend on gas in 4 weeks?
First, we need to determine how many miles Tony drives in 4 weeks. We do this by performing 50 * 5 = 250 miles per week. Next, we multiply the weekly total by 4 by performing 4 * 250 = 1000 miles in 4 weeks. Now, we need to find out how many times Tony needs to fill up his gas tank. His gas tank holds enough gas to last 25 * 10 = 250 miles. This means in 4 weeks, he needs to fill up his tank 1000 / 250 = 4 times. Since Tony's gas tank holds 10 gallons, this means he needs to pay for 4 * 10 - 40 gallons of gas in a month. Since gas costs $2 a gallon, this means Tony spends 40 * 2 = $80 on gas every month,.
The answer is 80.

Answer this question:James buys 3 CDs. Two of them are 1.5 hours each. The last one is twice that long. What is the combined length of the CDs?
The long CD is 1.5 * 2 = 3 hours. The two shorter CDs have a combined length of 1.5 * 2 = 3 hours. So in total the CDs had a length of 3 + 3 = 6 hours.
The answer is 6.