25,6
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10% of 160 is 16. So 16 x 4 (the 4 represents 40%) is 64.
The increase from 40 to 64 is: 60%
64 x 40/100=25.6
To calculate 40 percent of 40.00 dollars, you multiply 40.00 by 0.40. This results in 16.00 dollars. Therefore, 40 percent of 40.00 dollars is 16.00 dollars.
15 percent off on 64 dollars = $54.4015% off of $64= 15% discount applied to 170= $64 - (15% * $64)= $64 - (0.15 * $64)= $64 - $9.60= $54.40