Question

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 ?

A) 34 years B) 26 years C) 24 years D) 36 years

Answer 1

Step-by-step explanation:

Given :-

• The average of the ages of Sushanth, Krish and Rishi is 43 years.
• The average of the ages of Sushanth, Rishi and Rohit is 49 years.
• If Rohit is 54 years old,

supposed present ages of ,

• Sushanth = w
• Krish = x,
• Rishi = y
• Rohit = z ,

then ,

• w + x + y = 43 x 3 = 129 ---(i)

• 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,
• Rohit's age = z =54, x = 54 - 18 = 36.
• Krish age is 36 years

.

Answer 2

Answer:

D) 36 years

Step-by-step explanation:

...............