If  we consider the pair of DNA strands yes there is an equal number of adenine and thymine because one is the specific pair of the other. but if we talk of DNA and m-rna(That is formed during translation that answer would no,  since thymine is not present in rna it is replaced with uracil, so if in the DNA the base is adenine it will be paired by uracil and if the base in DNA is thymine it will be paired with adenine