A store pays $10 for a bracelet, and the markup is 115%

Ok so markup is 115%

percent emasn parts out of 100

115%=115/100=1.15

115% of 10

'of' means multipy

1.15 times 10=11.50

markup is what you add

10+11.5=21.5

new price=$21.50

First find 115% of 10 then add it to 10.

115% * 10=

1.15*10 = $11.50

This is the markup

Now add it to the cost to get the marked up price

11.50 + 10 = $21.50

*note - you were not clear whether you wanted the amount of markup or the new marked up price.