Question

If adenine makes up 20 percent of the bases in a sample of double-stranded dna, what percentage of the bases would be cytosine? 35 70 30 40 15

Answer 1

30 percent is going to be cytosine, because 20% of adenine,  plus 20% of thymine, and that leaves 60% for both guanine and cytosine, 

Answer 2

24.5 hope this works