Bobby had a party while his parents were away for the weekend. Bobby estimated that if his 9 friends help him to clean the house
, they will be able to finish cleaning in 8 hours before his parents return. After two hours of cleaning, Bobby's parents call and say they are just two hours from home. How many more friends does Bobby need to call for help to finish cleaning in time?
Sorry if this is a little weird I did it the way I did it but I know the answer is correct. The work may not seem right to you -.- but :D I understand it...
Guest
dude, you can't even call that an explanation, may you please elaborate on what you mean?
