Question 953546
Let x=amount  of time it takes the second worker working alone
Second worker works at the rate of 1/x of the suite per hour
Custodian works at the rate of 1/3 of the suite per hour
Custodian and second worker together works at the rate of 1/(1.5)=2/3 of the suite per hour
sooooo
1/x + 1/3 = 2/3 multiply each term by  3x
3+x=2x
x=3 hours----time it takes second worker working alone
Hope this helps----ptaylor