Ratio of present age of a brother to that of his sister is 6:1. After 8 years the ratio will become 2:1. What is the difference (in years) in their pre...
A father is three times as old as his son. After 10 years, the father will be twice as old as the son. What is the son's present age?
The current ages of A and B have a ratio of 7:9. Twelve years from now, B will be 12 years older than A. What will be the ratio of their ages in six years?
Four years ago, the ratio of ages of ‘Ravi’ and his sister was 3:4, respectively. 4 years from now, the ratio of ages of Ravi and his mother will be...
Ratio of present age of 'A' to that of 'B' is 5:8. If the age of 'A' two years hence from now will be 22 years, then after how many years, the ratio of...
The edge length of a regular tetrahedron is 10 cm. What is its volume?
Ratio of present age of 'A' to that of 'B' is 1:2. If the age of 'B' six years ago was 10 years, then after how many years, the ratio of the age of 'B'...
7 years ago, the ratio of the ages of Pia and Qasim was 9:7. The present age of Tom is 20 years more than one-seventh of Qasim’s present age. Find Tom...
Five years hence, age of 'A' will be 17 years. Ratio of present age of 'B' to 'A' is 5 : 3. If 'C' is 3 years younger than 'B', then find the age of 'C'...
The average of present ages of 'Anna', 'Bob', and 'Charlie' is 20 years. Three years ago, the average of ages of 'Bob', 'Charlie', and 'David' was 15 ye...
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