So we are given the expression:
 ÷
 ÷ 
When we divide fractions, we must flip the second term and change the sign to multiplication:

And then we multiply across:

Then we can break apart all of the like variables for simplification:

When we simplify variables through division, we subtract the exponent of the numerator from the exponent of the denominator. So we then have:



So then we multiply all of these simplified parts together:

So now we know that the simplified form of the initial expression is:  .
.
 
        
             
        
        
        
$7.85 x .8 yards=$6.28.  
$10-$6.28=$3.72 change back
        
             
        
        
        
I hope this helps you 
if he can run 10 miles in 85 minutes
 8 miles in ? minutes 
?.10 =8.85
?=8.85/10
?=4.17
?=68 minutes
        
             
        
        
        
Answer:
538,650
Step-by-step explanation:
We must first find how many errors there will be if filed manually and if filed electronically
Manually: 2,700,000*20% or 2,700,000*.2
Answer: 540,000 errors
Electronically: 2,700,000*.05% or 2,700,000*.0005
Answer: 1,350 errors
We must then find the difference; 540,000-1,350=538,650