mixed culture is one that contains more than one type of organism growing in a sterile medium, such as agar.
The ratio of age of A and his son is 9:3. If the difference of their ages 6 years ago is 36, then find the sum of the ages of A and his son together 4 y...
Three years ago, 'B' was twice as old as 'A'. In three more years, 'B' will be 60% older than 'A'. What is 'A's current age?
Present average age of 4 friends: ‘A’, ‘B’, ‘C’ and ‘D’ is 33 years. If their ages are in the arithmetic progression in the same order a...
The present age of Arvind is three times of Sanjay. 6 years hence the age of Arvind will become 5 years more than 2 times the age of Sanjay. The present...
The ratio of age of ‘B’ after 3 years from now and age of ‘C’ 6 years ago from now is 7:4, respectively. The present age of ‘C’ is 30% of th...
Shruti is currently 20% younger than Suhana. In four years, the age difference between them will change so that Suhana’s age will be to Shruti’s age...
The ratio of Rama’s to Shyama’s age is 1 : 2 and the sum of their age 81 years. What will be the ratio of their ages after 7 years?
B is 3 years older than A and A is 7 years older than C. If the sum of the age of A and C is 27 years, then find the sum of the ages of all three.
Which of the following is a video format?
The average age of A, B and C is 25 years, while the average age of B, A and D is 23 years. If the ratio of the age of C and D is 5:3, respectively, the...
