What does number sentence mean

Ben is greeting customers at a music store. Of the first 20 people he sees enter the store, 9 are wearing jackets and 11 are not.

There are 20 pieces of fruit in a bowl and 5 of them are apples. What percent of the fruit are apples?

Walt is buying a bicycle that regularly cost $120. It is on sale for 15% off. If the tax rate is 8%, what is the sale price of the bicycle including tax

What is the volume of an average sized pineapple without including the leaves?

Jerry plays tennis once every 6 days. Sam plays tennis every 10 days and Leo comes once every 12 days. Thus Monday all of them played. What day of the week will it be

There is a population of 50,000 bacteria in a colony. If the number of bacteria doubles every 120 hours, what will the population be 240 hours from now?

Eric is preparing for a regional swim meet that is a month away. He swims the same distance and clocks his best time on several different days.

Jason has 12 quarters. For every quarter, Jason also has a game token worth c cents. Jason knows the total value of his quarters and tokens is 420 cents. Which equation can Jason use to determine the value of the tokens?

Describe the ratio of gray tiles to white tiles in 3 different ways

What's 30+30:10 pkese