Question

वचन बदलिए (क) निजी। (ख) गोली
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Answer 1

Let the ages of Ramesh, Suresh and Mahesh be represented by R, S, M respectively.

Now, given M=R+45

(R+5)/(S+5) = 2/5

=> 5R + 25= 3S +1 0

=> 3S - 5R = 15 --------------(1)

Also,

(M-15)/(S-15) = 3/2

Putting M= R+45,

=> (R+30)/(S-15)= 3/2

=> 2R + 60= 3S - 45

=> 3S-2R = 105 ------------------(2)

Subtracting (1) from (2),

3S - 2R = 105

-(3S - 5R = 15)

----------------------------

3R = 90

=> R= 30.

Therefore,

M=R+45

M= 30 + 45= 75.

3S - 2R = 105

=> 3S - 60= 105

=> 3S = 45

=> S = 15.

Therefore, average of present ages

=(75+15+30)/3

=40. _______________Ans.