Walter, Bill, and Tom want to decorate the multi-purpose room in school for a dance. It would take Walter and Bill 4 hours each to do the job and Tom alone could do the job in 3 hours. If all work together, how long will it take them to decorate the room?
Ok so you have 1/4 +1/3 that = 7/12
so 7/12 = 1 Hour
12-7 = 5 (remaning time)
\(5/12=60\) (60 is 60 mins)
Divide everything by 12
so you get that 5/12=5mins
So you do 5*5 to get answer
so answer is 1 hour and 25 mins
this was rong idk what to do
NOTE i cant just put in 1 and 5/12 of an hour it needs to be hours and minitues
Walter rate = 1job / 4 hr
Bill rate = 1 job /4hr
Tome rate = 1 job /3 hr
1 job / (rates) = time for all three working to complete the jub
1 job / ( 1/4 + 1/4 + 1/3) = ? Hours