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Since ‘these variants’ is plural, ‘has been’ should be changed to ‘have been’. Only a few dozen sequences of these variants have been reported from a handful of countries.
Age of ‘A’ after 16 years will be three time of his age 12 years ago. Eight years hence from now, ratio of ages of ‘A’ and ‘B’ will be 2:3, ...
A’s age is the seventh part of his father’s age. After 10 years, the age of A’s father will be twice the age of B. If B’s 5th bi...
A's age : B's age is 4 : 3. After 6 years, A will be 26 years. What is B's present age?
The present age ratio of Anshul to Pawan is 5:7, and that of Chinky to Diksha is 3:2. A decade ago, the ratio of Anshul’s age t...
The average age of three children in a family is 25% of the average of the age of father and the eldest child. The total age of the mother and the young...
The respective ratio of the present ages of A and B is 5:6. The present age of C is 20% more than that of B. The sum of the present ages of A, B and C i...
The ratio of A and B present age is 4:3. The product of their ages is 4800. What will be the ratio of their ages after 5 years?
The ratio of age of A and his son is 11:3. If the difference of their ages 5 year ago is 24, then find the sum of ages of A and his son 14 year hence?
The total age of A, B and C five years hence will be 84 years. Find the age of C three years hence, if the present age of A and B is 34 years and 23 yea...