help please!

Jonathan buys 400 grams of trail mix that contain 18% cashew nuts. He mixes it with 200 grams of trail mix that contain 7% brainly cashew nuts. How many grams of cashews are in the second mix?

Jonathan buys 400 grams of trail mix that contain 18% cashew nuts. He mixes it with 200 grams of trail mix that contain 7% brainly cashew nuts. How many grams of cashews are in the new, resulting mixture?