If an a train is traveling at 8 feet per second, how many feet does it travel in 2 hours?

16 ounces of lemonade mix makes 2 gallons of lemonade (one gallon is equivalent to 4 quarts).

Quantity A: Amount of mix needed to make 3 quarts of lemonade

Quantity B: 6 ounces of mix

Bob can paint a house in 3 hours. If Bob and his friend Ron work together to paint the house, it takes 2 hours. How long would it take Ron to paint the house if he worked alone?

Flour, eggs, sugar, and chocolate chips are mixed by weight in the ratio of 12 : 5 : 3 : 5, respectively. How many pounds of chocolate chips are there in 75 pounds of the mixture?

Quantity A:

Quantity B:

In a class with students, if are taking Calculus and are taking Chinese, what is the lowest amount of students possible in the class that are taking both Calculus and Chinese?

If the sum of a, b and c is 400, and a is 1/3 b and b is 1/4 c, what is the value of a?

Erin went to the movies with her friends. She spent 1/4 of her allowance on movie tickets and 3/5 of the remaining money on popcorn. If her allowance is $10, how much money remains?

3 men can paint 3 rooms in 3 hours. How long would it take 1 man to paint 1 room?

You have a rope of some length, but 2/3rds of it is cut off and thrown away. 1/4th of the remaining rope is cut off and thrown away. What proportion of the original rope remains?