Posted by cynthia on Sunday, February 26, 2012 at 7:47pm.
my answer is 63.56. i don't know if its right answer. here this problem:
It takes Scott an average of 45 min to prune 1 tree. Victor takes 65 min to prune a tree on average. The ScottVictor Pruning Service has the contract to prune 92 trees in Flagstaﬀ, AZ. How long will it take them to prune all the trees

algebra. help!!  bobpursley, Sunday, February 26, 2012 at 7:53pm
rate= rate1+ rate2
rate= 1tree/45min + 1tree/65min= (65+45)/65*45
time= numbertrees/rate= 92(65*45)/110 in minutes, in hours divide by 60. You are wrong.