Subject
Quantitative Aptitude
Topic
Age
The average of the ages of Sushanth, Krish and Rishi is 43 years and the average of the ages of Sushanth, Rishi and Rohit is 49 years. If Rohit is 54 years old, what is Krish's age ?
The average of the ages of Sushanth, Krish and Rishi is 43 years and the average of the ages of Sushanth, Rishi and Rohit is 49 years. If Rohit is 54 years old, what is Krish's age ?
ক)
34 yearsখ)
26 yearsগ)
24 yearsঘ)
36 yearsExplanation
Let present ages of Sushanth = w, Krish = x, Rishi = y and Rohit = z , then w + x + y = 43 x 3 = 129 ---(i) and w + y + z = 49 x 3 = 147 ---(ii) Subtracting (i) from (ii), (w+y+z) - (w+x+y) = 147 - 129 , z - x = 18 ---(iii) Given Rohit's age=z=54, so from (iii), x = 54 - 18 = 36. Therefore, Krish age is 36 years.Related questions
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