Problems on Ages - General Questions

The ratio of the present ages of A and B is 5 : 2. After 11 years the ratio will be 41 : 23. What is A's present age?

The sum of the ages of two brothers is 26 years and the elder is 8 years older than the younger. What is the age of the elder brother?

A father is 4 times as old as his son. After 6 years he will be 3 times as old as his son. What is the father's present age?

The sum of the ages of two brothers is 67 years and the elder is 7 years older than the younger. What is the age of the elder brother?

The sum of the ages of two brothers is 51 years and the elder is 7 years older than the younger. What is the age of the elder brother?