Answer:
32 Minutes
Step-by-step explanation:
Together the two clerks can file 21 files per minute (10+11=21).
Therefore to file 672 folders would take 32 minutes (672/21=32)
8x + 12 = 3x + 5x + 12
8x + 12 = 8x + 12
Bringing like terms on one side
8x - 8x = 12 - 12
x = 0
(3+3) x (3+1)
free
x<=-2
-6<10-4x>=18
subtract 10
-16<-4x>=18
Divide by -4
Hope this helps
-Scorpio
