A moment ago, there were a total of 1837 spectators at a squash match. 392 of the female spectators and 540 of the male spectators left the stadium. Now there are four times as many female as male spectators left in the stadium. How many more female than male spectators are there in the stadium now?
Number of spectators left in the stadium
= 1837 - 392 - 540
= 905

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

5 u = 905
1 u = 905 ÷ 5 = 181

Number of male spectators
= 1 u 
= 181

Number of female spectators
= 4 u
= 4 x 181
= 724

Number of female spectators more than the male spectators
= 724 - 181
= 543

Answer(s): 543