Marta ate a quarter of a whole pie. edwin ate 1/4 of what was left. cristina then ate 1/3 of what was left. what fraction of the pie remains? answer is 3/8 how do you come up with this answer?

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?

What percent of 18 is 24? and plz explain thx.

Aprofessional hockey team has noticed that, over the past several seasons, as the number of wins increases, the total number of hot dogs sold at the concession stands increases. the hockey team concludes that winning makes people crave hot dogs. what is wrong with the hockey team's conclusion? a) it does not take into account the attendance during each season. b) it does not take into account the number of hamburgers sold during each season. c) it does not take into account the number of concession stands in the hockey arena. d) it does not take into account the number of seasons the hockey team has been in existence.