Question
Present ages of ‘A’, ‘B’ and ‘C’ are in the
ratio 8:10:11, respectively. If present average age of ‘A’ and ‘C’ is 19 years, then find the age of ‘B’ when ‘C’ was 20 years old?Solution
Let the present ages of ‘A’, ‘B’ and ‘C’ be ‘8x’ years, ‘10x’ years and ‘11x’ years, respectively. ATQ; (11x + 8x) ÷ 2 = 19 Or, 19x = 38 So, x = 2 So, present age of ‘C’ = 11 × 2 = 22 years Present age of ‘B’ = 10 × 2 = 20 years Difference between the ages of ‘B’ and ‘C’ = 22 – 20 = 2 years So, age of ‘B’ when ‘C’ was 24 years old = 20 – 2 = 18 years
The second number in the given number pairs is obtained by performing certain mathematical operation(s) on the first number. The same operation(s) are f...
Out of the given options, three are similar in a certain manner. However, one option is NOT like the other three. Select the option which is different f...
Select the odd letters from the given alternatives?
Four letter-clusters have been given, out of which three are alike in some manner and one is different. Select the letter-cluster that is different.
In the following question, four number pairs are given. In each pair the number on left side of (-) is related to the number of the right side of (-) wi...
The second number in the given number-pairs is obtained by performing certain mathematical operation(s) on the first number. The same operation(s) is/ar...
Three of the following four options are alike in a certain way based on the Alphabetical series. Which one among the following doesn’t belong to the g...
In the following question, four number pairs are given. In each pair the number on left side of (-) is related to the number of the right side of (-) wi...
Five letter-clusters have been given out of which four are alike in some manner and one is different. Select the one that is different.
Four numbers have been given, out of which three are alike in a certain way and one is different. Select the one that is different.
