Billy has 5 friends and he has leftovers from yesterday, there is 3/4 of the pizza left, he wants to share the pizza equally with him and his friends. How much of the whole pizza does everyone get?

Aresearch study is done to find the average age of all u.s. factory workers. the researchers asked every factory worker in ohio what their birth year is. this research is an example of a census survey convenience sample simple random sample

Tanyss's house has 25 windows. her brother has washed 22 of the windows. what percent of the windows has her brother washed?

Can anyone me with this question?