The age of Mohan and Sohan are in ratio 5:7. If Mohan was 9years older and Sohan 9 years younger, then their ages would be in ratio 2:1. Find their present age.
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Hi Priya,
Its a simple problem if you proceed systematically. So, lets start..
Let their present ages be represented respectively as M,S
M : S = 5:7
7M=5S
M=(5/7)S
now further, as per given information in the question (carefully understand & interpret what it says)
M+9:S-9 = 2:1
(M+9)/(S-9)=2/1
M+9 = 2(S-9)
M=2S-27
solving above two equations we will get
M=15 & S=21 which is nothing but their present ages.
so
Mohan is 15 yrs old
Sohan is 21 yrs old
Hope it helped you.
Please let me know if any further doubt.
Cheers !!!
:)
Its a simple problem if you proceed systematically. So, lets start..
Let their present ages be represented respectively as M,S
M : S = 5:7
7M=5S
M=(5/7)S
now further, as per given information in the question (carefully understand & interpret what it says)
M+9:S-9 = 2:1
(M+9)/(S-9)=2/1
M+9 = 2(S-9)
M=2S-27
solving above two equations we will get
M=15 & S=21 which is nothing but their present ages.
so
Mohan is 15 yrs old
Sohan is 21 yrs old
Hope it helped you.
Please let me know if any further doubt.
Cheers !!!
:)
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