Answer :
workers.time/jobs = 16.10/8 = 20 then you must do the same for the other one. 12.t/9 = 20
Multiply both sides by 9
12T= =180 then divide both sides by 12
T= 15 hours
Multiply both sides by 9
12T= =180 then divide both sides by 12
T= 15 hours