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

Guest Jan 27, 2020

#1**+3 **

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

ElectricPavlov Jan 27, 2020