Respuesta :

Answer: 27

Step-by-step explanation:

If 40% are girls, this means 60% are guys. 60% of 45 is 27.

Answer:

27 boys

Step-by-step explanation:

40% = 4/10 = 2/5;

45÷5=9, 9×2=18; There are 18 girls in the classroom.

45-18=27; 27+18=45; There are 27 boys in the classroom.

Hope my explanation helps! Please mark my answer brainliest!