Respuesta :
If 55% had on red shirts, then 100% - 55% had on white shirts. Therefore, 45% had white shirts. 45% is equal to 0.45 and to find the number of spectators who had on white shirts, you multiply 0.45 by 12,000 to get your answer.
First we have to find what is the remaining part, which will be white.
1. 100% - 55% = 45% had white shirts.
So now we have to figure out a number not a percent. Therefore, we will get 45% of 12,000.
2. 45% x 12,000 = 5,400
3. 5,400 had white shirts.