There are 150 students in a class and 40% of them are girls. 30% of the boys in the class have not studied maths. Taking the class as a whole, 60% of the students have studied maths. How many girls in the class have not studied maths?

Question

anonymous · Answer

90-boys,60 girls,63-boys studied maths 27-bots not
whole=60% studied maths 70% studied maths in boys

anonymous · Answer

3x=70 sox=23.33

mokeira · Answer

first find the number of girls and boys
$$Girls=\frac{ 40 }{100 }\times150=60$$
$$Boys=150-60=90$$
Students who have not studied math are 40%
$$\frac{ 40 }{ 100 }\times150=60students $$
so 60 students have NOT studied math
We also know that 30% of boys have not studied so:
$$\frac{ 30 }{ 100 }\times90=27$$
Out of 60 students who have not studied, 27 of them are boys
$$girls=60-27=33$$

anonymous · Answer

28 girls studied maths and 32 didnt studied