A moment ago, there were a total of 1891 spectators at a tennis match. 286 of the male spectators and 507 of the female spectators left the stadium. Now there are twice as many male as female spectators left in the stadium. How many more male than female spectators are there in the stadium now?
Number of spectators left in the stadium
= 1891 - 286 - 507
= 1098

Number of female spectators in the end = 1 u
Number of male spectators in the end = 2 u
Total number of spectators in the end = 1 u + 2 u = 3 u

3 u = 1098
1 u = 1098 ÷ 3 = 366

Number of female spectators
= 1 u 
= 366

Number of male spectators
= 2 u
= 2 x 366
= 732

Number of male spectators more than the female spectators
= 732 - 366
= 366

Answer(s): 366