Your client requests a portfolio with zero Environmental Risk. They are interested in two Exchange Trade Funds and will allow you to short one of the ETFs. What is the weight in the first ETF if you create a zero Environmental Risk with a negative weight in the second ETF. The first ETF's Environmental Score is 2.3 and the second ETFs score is 11.0. (Answer in % to one decimal place, 40.5% is 40.5 )