1. there were 136 students and 34 adults in the concert. if 85% of the seats were filled how many seats are in the auditorium?
2. 40% = 32/x

1. 136+34= 170 total concertgoers. If we divide 170 by 85, we get 2; so each percentage point equals 2. Multiply 2 by a hundred and you get 200 people in total
 
2. Is this question to solve for X? in that case, we can solve it easier in the form 

then we try and dive them the same numerator by multiplying each by the other:

This tells us that 

so .