There are several flyers that need to be printed. Working alone, Printers A, B, and C can finish the task in 3, 4, and 8 hours, respectively. If we use all three printers simultaneously, how many minutes will it take to finish the printing task?

Guest Jun 28, 2021

#1**0 **

A will do 1/3 of the task in 1 hour.

B will do 1/4 of the task in 1 hour.

C will do 1/8 of the task in 1 hour.

Together, they do 1/3 + 1/4 + 1/8 of the task in 1 hour.

How many hours does it take?

=^._.^=

catmg Jun 28, 2021

#2**+2 **

Their rates per job are 1job/ 3 hours 1/4 and 1/8

combining their rates for the one job:

1 job / ( 1/3 + 1/4 + 1/8) = _______ hours ( multiply this answer by 60 to get 'minutes')

ElectricPavlov Jun 28, 2021