Question
The age ratio of Kiran and Meena 3 years ago was 3:4. In 9
years from now, the ratio of their ages will be 5:6. What is the present age of Meena?Solution
ATQ,
Let the ages of Kiran and Meena 3 years ago be '3x' and '4x' respectively.
So, Kiran’s age after 9 years = 3x + 3 + 9 = (3x + 12) years
And Meena’s age after 9 years = 4x + 3 + 9 = (4x + 12) years
ATQ,
(3x + 12)/(4x + 12) = 5/6
⇒ 6(3x + 12) = 5(4x + 12)
⇒ 18x + 72 = 20x + 60
⇒ 12 = 2x
⇒ x = 6
So, present age of Meena = 4 × 6 + 3 = 27 years
3Â Â Â Â Â Â Â Â Â 6Â Â Â Â Â Â Â Â Â 18Â Â Â Â Â 149Â Â Â Â Â Â Â Â 602Â Â Â Â Â Â Â Â 15057
...1, 1, 3, 15, 105, 942
- Find the wrong number in the given number series.
8, 14, 24, 49, 59, 84 2, 4, 16, 48, 240, 1440, 10080
1001, 934, 863, 790, 711, 630, 539
Find the wrong number in the given number series.
1728, 121, 1000, 729, 512, 49
Find the wrong number in the given number series.
21, 31, 11, 41, 1, 61Find the wrong number in the given number series.
548, 532, 568, 510, 604, 460
9Â Â Â Â Â Â Â Â Â Â Â Â Â 17Â Â Â Â Â Â Â Â Â Â 53Â Â Â Â Â Â Â Â Â Â 103Â Â Â Â Â Â Â Â 310Â Â Â Â Â Â Â Â 619
...43, 42, 41, 39, 33, 10