Question
The ratio of the present ages of ‘A’ and ‘B’ is
5:6, respectively. Six years hence from now, the age of ‘B’ will be 18 years. If the average of present ages of ‘A’, ‘B’ and ‘C’ is 23 years, then find the present age of ‘C’.Solution
Let the present ages of ‘A’ and ‘B’ be 5x years and 6x years, respectively Therefore, 6x + 6 = 18 Or, 6x = 12 Or, x = 2 Sum of present ages of ‘A’ and ‘B’ = 5x + 6x = 22 years Sum of present ages of ‘A’, 'B’ and ‘C’ = 23 × 3 = 69 years Therefore, present age of ‘C’ = 69 – 22 = 47 years
Find the LCM of 34 and √784.
If x + (1/x) = 9 then x2 + 1/x2 = ?
At present, the combined age of Ravi and Rajeev is 42 years, with their ages in the ratio of 4:3. What will be the ratio of their ages six years from now?
Sunil sold a purse for Rs. 360 after offering a discount of 20% on its marked price. If on selling the purse Sunil gained 20% then find the sum of the m...
How many pairs of letters are there in the word “HELICOPTER” each of which have as many letters between them in the word as they have between them i...
An article is initially marked at 40% above its cost price. It is then sold after applying two successive discounts - one of 12% and another of Rs. 56. ...
Calculate the difference between the area of a wall having dimension 22 cm X 23 cm and the area of a spherical bowl having diameter 14cm.
A total of Rs. 1,400 was meant to be distributed between A and B in the ratio of 3:7. However, due to an error, it was instead divided in the ratio of 3...
A and B are travelling towards each other with a speed of 40 km/hr and 50 km/hr. If they started at same time and A covered 20 km less distance than B b...
A sum of Rs. 14500 is split between 'A' and 'B' in the ratio 16:13. If 'B' invests the sum with him in a scheme offering compound interest (compounded a...
