In a class of 60 students, the ratio of girls to boys is 2 : 3. If 20 more girls join the class, then what is the new number of girls in the class?
Answer & explanation
Correct answer: option 2
Girls : Boys = 2 : 3
⇒ Total no. of students = 60
⇒ (2 + 3) units = 60
⇒ 5 units = 60
⇒ 1 unit = 12
⇒ Girls = 2 x 12 = 24
⇒ If 20 more girls are added the total number of girls = 24 + 20 = 44.