A moment ago, there were a total of 1547 spectators at a tennis match. 353 of the male spectators and 504 of the female spectators left the stadium. Now there are four times 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
= 1547 - 353 - 504
= 690

Number of female spectators in the end = 1 u
Number of male spectators in the end = 4 u
Total number of spectators in the end = 1 u + 4 u = 5 u

5 u = 690
1 u = 690 ÷ 5 = 138

Number of female spectators
= 1 u 
= 138

Number of male spectators
= 4 u
= 4 x 138
= 552

Number of male spectators more than the female spectators
= 552 - 138
= 414

Answer(s): 414