How are we supposed to know how much copper/zinc to consume? This, and other minerals, if we have enough of one, we have too little of the other.
If you took in 1.63 mg of copper from all your foods, then the right amount of zinc for the day would be 12.225 mg.
1 : 7.5 ratio
1.63 mg : 12.225 mg
I believe the Upper Tolerable Limit of copper is 10 mg a day, and 40 mg a day for zinc.
Some people taking AREDS formula for their eyes for AMD get more zinc than 40 mg a day.