Find frequency of allele in the next generation

Question: Think about a population of one hundred individuals and the frequency of the A allele is 0.8 and the frequency of the a allele is 0.2. If the following fitness values for each genotype are applied to the next generation, what will be the frequency of the A allele in the next generation?
wAA = 0.25
wAa = 0.25
waa = 1

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