$2.35-.235 cents =

Question

A Hamburger cost $2.35 but you take 10% off I know $2.35 would go into .235 cents if you move the decimal but how do you go on with the problem? Also how do you take the 10% off of the .235 cents? Please Help!

Answer 1

PLZ review the conversion factor:  $1.00 = 100 cents.  So, $2.35 is 235 cents.

 

Now, you have the problem you described.  10% of 235 is 23.5 cents.  How do you take 10% off??

 

Well, this is where rounding is important.  Either the discount is 23 cents (which is 9.79%) or 24 cents (which is 10.21%), because the discount must be in whole cents.  So, what usually happens is that the rules you learned in math for rounding numbers don't apply; the sales person (or store) chooses either 9.79% or 10.21%.

 

(note: the rules for % taxes are fixed by the taxing authority and must be strictly followed)

Answer 2

A hamburger chain cannot deal in fractions of a cent, so they are going to round down the 23 1/2 cents to 23 even, so the discount would be $2.12 for the burger - enjoy.

Answer 3

235 cents is the same as $2.35.  This is because cents is a 1/10 of a dollar, or we can say that 100 cents is equivalent to a dollar.  To take 10% off the $2.35, we multiply by 0.10.  Then we subtract the result from the $2.35.  So we have

 

 

$2.35 - 0.10($2.35)