Question
In a class of 225 students, 125 are girls and remaining
are boys. Among boys, the ratio of number of boys who are wearing caps to those who are not wearing caps is 1:4 respectively. Find the number of boys in the class who are wearing caps.Solution
Number of boys in the class = 225 – 125 = 100 Number of boys who are wearing caps = 100 × (1/5) = 20
The present age ratio of A and B is 4:7. After 5 years, the ratio of their ages will be 5:8. Find the present age of B.
Average age of 4 daughter of a family is 8 years and average age of daughter together with their parents is 16 years. If mother is 4 years younger than...
The current ages of 'Pankaj' and 'Ranjan' are in the ratio of 2:5. If Ranjan's age 13 years from now will be six times Pankaj's age 6 years prior to now...
 Rohan's present age is 3/7 times the age of his mother. After five years, he will be one- half of the age of his mother. How old is his mother at pres...
After 5 years, the age of Seema will be 3 years less than 3 times of her age, 4 years back. What is Seema’s present age?
5 years ago, A was 1/3 of B’s age. If the ratio of their present ages is 2:5, what will be the sum of their present ages?
Present age of ‘A’ is 60% more than that of ‘B’. If 13 years hence from now, ‘B’ will be 12 years younger than ‘A’, then find the sum of...
Present age of ‘A’ is 40% more than that of ‘B’. If 11 years hence from now, ‘B’ will be 5 years younger than ‘A’, then find the sum of ...
Present ages of 'A' and 'B' are in the ratio 3:5, respectively. If B's age, 8 years hence from now will be 3 times of A's age, 12 years ago from now, th...
- The present age ratio of Kavya to Neha is 3:5. Seven years ago, Neha was 5 years more than twice the age of Kavya. If present average age of Kavya, Neha an...