Question 1167085
In a class of 30 students, 20%have back hair, 10%have blond hair, 70%have brown hair. Calculate the number of students with;
a) black hair
b)blonde hair
c)brown hair
solution
a) Black Hair 30x0.2=6 students 
b) Blonde Hair =30x0.1=3 students 
c) Brown Hair =30x0.7=21 students