Author 
Topic 

energy
Junior Member
USA
4 Posts 
Posted  09/08/2007 : 18:31:26

applications involving percents and rates:
Wayne County has a sale tax rate of 7%. How much does Mike's Honda Civic Cost before tax if the total cost of the car plus tax is $13,888.60?
i set up the problem like X+0.07=13,888.60 but when i solve it the answer are total wrong~ can someone please tell me what part did i miss? also if anyone knows any tips on solving word problems please tell me. THANK YOU VERY MUCH!



energy
Junior Member
USA
4 Posts 
Posted  09/08/2007 : 19:42:50

quote: Originally posted by David
Try this:
1.07x = 13888.6
Solve for x.
thank you it works~ but can u tell me how did u get 1.07 instead of 0.07? 


Mrspi
Advanced Member
USA
998 Posts 
Posted  09/08/2007 : 22:08:09

quote: Originally posted by energy
applications involving percents and rates:
Wayne County has a sale tax rate of 7%. How much does Mike's Honda Civic Cost before tax if the total cost of the car plus tax is $13,888.60?
i set up the problem like X+0.07=13,888.60 but when i solve it the answer are total wrong~ can someone please tell me what part did i miss? also if anyone knows any tips on solving word problems please tell me. THANK YOU VERY MUCH!
Ok...if the sales tax is 7%, then you will pay 7% of the purchase price for tax.
If the purchase price is x dollars, the sales tax will be 7% of x, or 0.07x.
The total you will pay on a purchase of x dollars is x + 0.07x....or, 1x + 0.07x, or 1.07x
Ok??
If the total you pay for the vehicle, including tax, is $13,888.60, then
1.07x = 13888.60 


Subhotosh Khan
Advanced Member
USA
9116 Posts 
Posted  09/08/2007 : 22:15:54

quote: Originally posted by energy
applications involving percents and rates:
Wayne County has a sale tax rate of 7%. How much does Mike's Honda Civic Cost before tax if the total cost of the car plus tax is $13,888.60?
i set up the problem like
The price of car = X
tax on car = 0.07 * X X + 0.07 * X = 13,888.60
1.07 * X = 13888.60
but when i solve it the answer are total wrong~ can someone please tell me what part did i miss? also if anyone knows any tips on solving word problems please tell me. THANK YOU VERY MUCH!




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