defence exam CISF Head Constable Ministerial (HCM) & ASI Steno Mock Test Series Quantitative Aptitude Mixture Problems
In a class the average age of boys is 25 years and the average age of girls is 18 years. If the average age of students in the class is 20 years, then find the ratio of the number of girls to the number of boys.
1
5 : 2
2
1 : 1
3
5 : 3
4
3 : 2