Find 0.15% of 43 cookies

43*0.0015=0.0645

0.0645 is 0.15% of 43

43/x=100/0.15

(43/x) * x = (100/0.15) * x - we multiply both sides of the equation by x

43=666.666666667*x - we divide both sides of the equation by (666.666666667) to get x

43/666.666666667=x

0.0645=x

x=0.0645

now we have:

0.15% of 43=0.0645