In a concert hall, 60% of the seats were taken. 520 seats were empty. What is the total number of seats in the concert hall?
2 answers
0.60 x + 520 = x
520=40%
60%=?
20%=260
40%+20%=780
780+520=1300
60%=?
20%=260
40%+20%=780
780+520=1300