16 students is the correct answer...
for every 5 boys there are 3 girls, so 20 boys 6 girls = the total of 16 students
In 1992: t=0 and A=169 million
In 1999: t=7 and P= 174 million
Solve for k: blah blah blah
In 2010: t=18
The answer is : 182 million (trust me)
