+0  
 
+4
657
1
avatar+12 

A

plumber

charges

$20.26

to

visit

a

client's

home,

plus

an

additional

$36.34

per

hour.

 

What

is

the

duration,

in

hours,

of

a

plumber's

visit

that

costs

$92.94?
 

 Nov 9, 2016
 #1
avatar+7188 
+5

Let's set up an equation.

 

92.94=20.26+36.34h

 

Subtract both sides by 20.26.

 

92.94-20.26=20.26-20.26+36.34h

 

72.68=36.34h

 

Divide both sides by 36.34

 

72.68/36.34=36.34h/36.34

 

2=h

 

Now,  we must remember that the 36.34h was for each additional hour,  20.26 was for the original hour.

 

So we add on 1 to 2 and we find out the plumber was at that household for 3 hours.  I hope this helps,  and have  a great day! @-Happy7

 Nov 9, 2016

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