Question

Hello I need help really quick, it's about percentages

Answer 1

Answer:Let x be the total number of students in the class.

60% of x = ? (number of girls)

40% of x = 18 ( number of boys)

therefore, (2/5)x=18

x=45 ( Total number of students)

Answer 2

30 students total, 12 boys

18/0.6 = 30
30-18=12
To check answer: 30*0.4 = 12