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The arithmetic mean of the two regression coefficients is greater than or equal to r which is equal to the Geometric Mean of the two regression coefficients.
Four years ago, the total age of Riya and Samarth was 56 years. At present, the ratio of their ages is 3:5. What will be Samarth’s age six years from ...
The ratio of the present ages of P and Q is 7:5 respectively. If the age of P 10 years hence from now will be 100% more than the age of Q 4 years ago fr...
‘A’ is 8 years younger than ‘B’ and 7 years elder than ‘C’. If the present age of ‘B’ and ‘D’ is 40 years and 30 years, respectively...
In a classroom there are 13 boys and 11 girls. Average age of each boy and each girl is 23 years and 17 years respectively. The sum of ages of all the b...
The ratio of the present age of 'E' to that of 'F' is 2:3. If six years hence, the ratio of their ages will become 3:4, find the sum of their ages, five...
6 years ago, the ratio of the ages of A and B was 2:3 and after 5 years it will become 5:7. Find their present ages.
The respective ages of a mother and her daughter are 30 and 8 years. In how many years will the mother be thrice as old as her daughter?
The ratio of present ages of Alice and Bob is 5:7, respectively. Charlie, who is 3 years older than Alice, will become 40 years older after 12 years. Fi...
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?
Seven years ago, 'R' and 'C' had ages in a ratio of 4:3, respectively. After seventeen years, the ratio of 'C' and 'R's ages will be 9:10, respectively....
