There were 11 friends playing a video game online when 5 friends quit. if each player left had 5 lives, how many lives did they have total?

Jim makes $10.35 per hour. write an equation that jim can use to calculate his pay.

34 cup. a serving of vegetable soup is 23 cup. the restaurant sold 20 servings of chicken noodle soup and 18 servings of vegetable soup. how many more cups of chicken noodle soup did they sell than cups of vegetable soup?

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.