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The macneils rented a moving truck for $49.95 plus $.30 per mile it is driven.  Before returning the truck they refiled the gas tank for $18.32  The total cost was $95.87 How many miles did they go?

I honestly need help on solving this because I dont know how to find the number of  miles....If you could maybe help by explaing how you got an answer?

 Dec 2, 2014

Best Answer 

 #1
avatar+118723 
+5

they had to replace the petrol that the used   $18.32

and they had to pay an initial amount of 49.95

 

so far that is    $${\mathtt{49.95}}{\mathtt{\,\small\textbf+\,}}{\mathtt{18.32}} = {\frac{{\mathtt{6\,827}}}{{\mathtt{100}}}} = {\mathtt{68.27}}$$

 

Now they also had to pay 30 cents (0.3 dollars) for every mile that they drove.  

Say they drove M miles this would be 0.3M dollars

so we have

68.27+0.3M = 95.87

subtract 68.27 from both sides

0.3M = 27.60

divide both sides by 0.3

M=92miles

They drove 92 miles  

 Dec 3, 2014
 #1
avatar+118723 
+5
Best Answer

they had to replace the petrol that the used   $18.32

and they had to pay an initial amount of 49.95

 

so far that is    $${\mathtt{49.95}}{\mathtt{\,\small\textbf+\,}}{\mathtt{18.32}} = {\frac{{\mathtt{6\,827}}}{{\mathtt{100}}}} = {\mathtt{68.27}}$$

 

Now they also had to pay 30 cents (0.3 dollars) for every mile that they drove.  

Say they drove M miles this would be 0.3M dollars

so we have

68.27+0.3M = 95.87

subtract 68.27 from both sides

0.3M = 27.60

divide both sides by 0.3

M=92miles

They drove 92 miles  

Melody Dec 3, 2014

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