In Year 2, there are three times as many seven-year-olds as there are eight-year-olds. If there are 60 students in the year in total, how many of them are seven-year-olds?

In a certain school, 20% of students are below 8 years of age. The number of students above 8 years of age is 2/3 of the number of students of 8 years of age which is 48. What is the total number of students in the school?

In a class of 60 students, the number of boys and girls participating in the annual sports is in the ratio 3 : 2 respectively. The number of girls not participating in the sports is 5 more than the number of boys not participating in the sports. If the number of boys participating in the sports is 15, then how many girls are there in the class ?

here are 140 third grade students at Ridge Elementary School. Fourteen of the third graders were absent on Tuesday. How many third graders were at school on Tuesday?

The sum of the ages of a father and son is 60 years. Four years ago, the father’s age was three times the age of the son. What are their present ages?

Father is aged three times more than his son Ronit. After 8 years, he would be two and a half times of Ronit's age. After further 8 years, how many times would he be of Ronit's age?