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LCM of 12, 16 and 24 is 48. Efficiency of A = (48/12) = 4 units/day Efficiency of B = (48/16) = 3 units/day Efficiency of C = (48/24) = 2 units/day Time taken by B and C together for 4 days = [4 x (3 + 2)] = (4 x 5) = 20 units The remaining work = (48-20) = 28 units Now, Time taken by B and A to complete the remaining work = [28/ (3 + 4)] =28/7 days = 4 days The required time is 4 days.
A is younger than B by 3 years. If the ratio of A and B ages is 7:10 respectively, then find the age of A.
The ages of A, B and C together are 42 years. B is twice as old as A and C is 2 years older than A. What is the difference between ages of B and C?
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...
The current average age of Aman and Bhanu is 27 years, and the ratio of Bhanu's present age to Chetna's present age is 10:11. If Aman's current age is 2...
Present age of ‘M’ is 25% more than that of ‘N’. 5 years ago, ‘M’ was 1.5 times as old as ‘N’. Find the present age of ‘N’.
...Eight years ago, the ratio of the ages of Ram and Shyam was 5:6, respectively. Seven years hence, the ratio of the ages of Prem and Shyam will be 3:4, r...
Average of present age of A and C is 29 years and C is 8 years younger than B. Ratio of present age of A to present age of B is 6:5. Find present age of B.
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.
B is 5 years older than A and A is 8 years older than C. If the sum of the age of A and C is 24 years, then find the sum of the ages of all three.
The ratio of the present ages of P and Q is 8:5 respectively. If the age of P 14 years hence from now will be 100% more than the age of Q 4 years ago fr...
