Answer:
1.925mg of levonorgestrel and 0.68mg of ethinyl estradiol are taken during the 28-day period.
Step-by-step explanation:
The total milligrams of levonorgestrel is:

In which  and
 and  are the number of miligrams of levonorgestrel taken in each phase.
 are the number of miligrams of levonorgestrel taken in each phase.
The total milligrams of ethinyl estradiol is:

In which  and
 and  are the number of miligrams of ethinyl estradiol taken in each phase.
 are the number of miligrams of ethinyl estradiol taken in each phase.
We can solve this by phase.
Phase 1: 6 tablets, each containing 0.050 mg of levonorgestrel and 0.030 mg ethinyl estradiol
In this phase,
 of levonorgestrel and
 of levonorgestrel and  of ethinyl estradiol are taken.
 of ethinyl estradiol are taken.
So  and
 and 
Phase 2: 5 tablets, each containing 0.075 mg of levonorgestrel and 0.040 mg ethinyl estradiol
In this phase,
 of levonorgestrel and
 of levonorgestrel and  of ethinyl estradiol are taken.
 of ethinyl estradiol are taken.
So  and
 and 
Phase 3: 10 tablets, each containing 0.125 mg of levonorgestrel and 0.030 mg ethinyl estradiol
In this phase,
 of levonorgestrel and
 of levonorgestrel and  of ethinyl estradiol are taken.
 of ethinyl estradiol are taken.
So  and
 and 
The total milligrams of levonorgestrel is:

The total milligrams of ethinyl estradiol is:

1.925mg of levonorgestrel and 0.68mg of ethinyl estradiol are taken during the 28-day period.