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December 22, 2014

December 22, 2014

Posted by **lee** on Thursday, January 27, 2011 at 11:50pm.

the answer is $51.50 but i got 51 i dun know why i solve it like this (below)

7x+3.50= 385

7x=381.5

x=54.5

54.5-3.50 = i got 51

- math 9 helppp -
**helper**, Friday, January 28, 2011 at 12:32amThe equation is

7x = 385 - 7(3.50)

7x = 385 - 24.50

7x = 360.50

x = 51.5

EACH ticket has a 3.50 service fee

- math 9 helppp -
**lee**, Friday, January 28, 2011 at 12:38amhow about this equation? is this right??

7x=380

x=55

55-3.50

=51.5

- math 9 helppp -
**helper**, Friday, January 28, 2011 at 1:31amWell, you arrived at the same answer, but the equation is not correct for the problem.

Your equation doesn't make sense.

Where did you get 380?

380/7 = 54.29 not 55, even rounded it would be 54 or 54.30 not 55.

And, it is 3.50 fee/ticket.

You can't randomly subtract 3.50 from your total just to arrive at the correct answer.

What's wrong with doing the equation the correct way?

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