Question
Six years ago, the ratio of ages of Alok and Ravi was
7:9, respectively. Eight years hence, the ratio of ages of Rohan and Ravi will be 5:6, respectively. If Rohan is 1 year younger than Alok, find the age of Alok, 'c' years hence from now, where 'c' is the third smallest two-digit prime number.Solution
ATQ Let the ages of Alok and Ravi 6 years ago be '7z' years and '9z' years, respectively. So, age of Rohan 6 years ago = (7z - 1) years. ATQ, 
6 × (7z + 13) = 5 × (9z + 14) 42z + 78 = 45z + 70 45z - 42z = 78 - 70 z = 8/3 Since, 17 is the third smallest two-digit prime number. So, 'c' = 17 Therefore, age of Alok, 17 years hence = 7z + 6 + 17 = 7 × (8/3) + 23 = 18 + 23 = 41 years
How is T related to S? Â Â
Answer the following questions based on the information given below.
Seven persons T, U, V, W, X, Y and Z has different weights. T is heavier...
How many persons are shorter than T?
There are five persons Priya, Mohini, Chetna, Alka and Garima, who have different heights. Priya is taller than Garima but shorter than Alka. Chetna is ...
Five persons N, P, R, U and Y have different weights. Only one person has more weight than Y. P is heavier than U but not the heaviest. Weight of second...
Certain number of boxes are in a stack, such that the box, which is at the bottom, is numbered as 1, the box above it as 2 and so on. Box W is 14t...
Six laptops P, Q, R, S, T and U have different prices. P is cheaper than Q. R is not costlier than S. S is not costlier than P. U is costlier than T. Mo...
In a class among five students, F has more marks than G and H, but H does not have least marks. I has more marks than J and J has more marks than F, who...
Select the combination of letters that when sequentially placed in the gaps of the given letter series will complete the series.
t _ v _ x _ u v w...In a certain code language, "BOND" is coded as 24 and "PLANT" is coded as 67. How will "SMART" be coded in that language?
Relevant for Exams:
