Jessica melts 200 grams of dark chocolate that contains 60% of cocoa and mixes it with 200 grams of milk chocolate that contains 30% of cocoa. How much cocoa is in the resulting mixture?

180 grams

Step-by-step explanation:

Given that:

Grams of dark chocolate = 200

% cocoa = 60%

Grams of milk chocolate = 200

% cocoa = 30%

Amount of cocoa in resulting mixture :

(Proportion of milk chocolate + proportion of dark chocolate)

(30% of 200) + (60% of 200)

(0.3 * 200) + (0.6 * 200)

60 + 120

= 180 grams