Question 492655
3% is same as 3/100. You can just cross multiply.
{{{3/100 = x/177}}}
{{{177*3 = 100x}}}
{{{531 = 100x}}}
{{{x = 5.31g of Avobenzone}}}
Then, do the same, but for 1,000 bottles, as the proportions remain the same.
{{{3/100 = x/1,000}}}
{{{100x = 3,000}}}
{{{x = 30g of Avobenzone}}}
However, this asks for the answer in kilograms. Move the decimal point left four places.
It requires .03g of Avobenzone.