If (10 a³ + 4b³): (11a³ — 15b³) = 7:5, then (3a + 5b): (9a - 2b) = ?
10a3 + 4b3 /11a3 – 15b3 = 7/5 =50a3 +20b3 = 77a3 -105b3 = 27a3 = 125b3 = a3 / b3 = 125/27 = a/b = 5/3 = (3a + 5b) / (9a – 2b) = 3 × 5 + 5 × 3 / 9 × 5 – 2 × 6 = 30/39 = 10 : 13
Present average age of A, B and C together is 44 years. Age of B is 12 Years hence from now will be 260% more than age of A. Four years ago from now whi...
A is younger than B by 5 years. If the ratio of A and B ages is 6:7 respectively, then find the age of A.
Determine the average current age of 'A' and 'B', given that six years ago, 'A' was 12 years younger than 'B', and twelve years from now, the ratio of t...
K is as much younger than M as he is older than O. If the sum of the ages of M and O is 100 years, what is definitely the difference between M and K’s...
At present Meena is eight times her daughter’s age. Eight years from now, the ratio of the ages of Meena and her daughter will be 9 : 2 respective...
The total age of A, B and C six years hence will be 89 years. Find the age of C five years hence, if the present age of A and B is 33 years and 24 years...
The ratio of the present ages of P and Q is 6:5 respectively. If the age of P 12 years hence from now will be 100% more than the age of Q 4 years ago fr...
2 years ago, age of A and B was in the ratio 2:3. After 6 years, the ratio becomes 6:7. Present age of C is 6 years more than the present age of B. Find...
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...
Arjun is three years senior to Binny, who is twice as old as Chinu. If the average age of Arjun, Binny, and Chinu is 21 years, what is the age differenc...
