In a group of 60 workers, the average (arithmetic mean) salary is $80 a day per worker. If some of the workers earn $75 a day and all the rest earn $100 a day, how many workers eaen $75 a day?

Pls me this is due today and i need i will make brainliest if you me answer correctly and i will report if you try to give me a dumb answer.

Hurrya vegetable garden and a surrounding path are shaped like a square that together are 11ft wide. the path is 2ft wide if one bag of gravel covers 9 square feet how many bags are needed to cover the path

What is the volume of this container?