at the end of the month , a certain ocean desalination plant ’ s reservoir contained 30 million gallons of water . this amount is twice the normal level . if this amount represents 75 % of the reservoir ’ s total capacity , how many million gallons short of total capacity is the normal level ?
n0 = 30.0
n1 = 75.0
t0 = n0 / 2.0
t1 = n1 / 100.0
answer = t0 / t1
print(answer)