Spice Kitchen Arithmetic

Algebra Level 3

Harvey has a 2-pound sack of spice mix that contains $\frac{6}{15}$ pounds of pepper. The rest of the mix is a combination of cinnamon and cumin. He has a salt-and-pepper mix which consists of 65% pepper and 35 % salt. How many pounds of the salt-and-pepper mix must he add, in order to have a mix that is exactly half pepper?