Kalyan's present age is one-third his mother's present age.If the mother's age was five times his age 6 years ago,
what are their present ages?
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Answers
_______________________________
•Kalyan’s mother present age is 36 yrs
•Kalyan’s present age is 12 yrs
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_______________________________
Given ,
•Kalyan’s present age is in one - third of
his mother’s present age.
•If the mother's age was five times his
age 6 years ago.
To find ,
Kalyan’s and Kalyan’s mother present
ages.
_______________________________
Explanation-:
Let the age of Kalyan’s mother be
-: a yrs
Then ,
Kalyan’s age will be -: 1/3 x A yrs
Now ,
• Six years ago -:
Kalyan ‘s mother age is -: (a - 6 ) yrs
Kalyan’s age -: (1/3 x A - 6 )yrs
Now ,
According to the question,
(A - 6) = 5(1/3 x a- 6)
(A -6) = 5 (a - 18/3)
(A - 6) = (5a - 90/3)
3(A - 6 ) = (5a - 90)
3a - 18 = 5a - 90
3a - 5a = -90 + 18
- 2a = -72
A = -72 / - 2 [ “— sign” will be eliminated]
A = 72 / 2
A = 36
Hence ,
Kalyan’s mother present age -: a
A = 36 yrs
Kalyan’s age -: 1/3 x a
1/3 x 36
= 12 yrs
_______________________________
•Kalyan’s mother present age is 36 yrs
•Kalyan’s present age is 12 yrs
______________________________
Answer:
✧Kalyan’s mother present age is 36 yrs
✧Kalyan’s present age is 12 yrs
Given ,
•Kalyan’s present age is in one - third of
his mother’s present age.
•If the mother's age was five times his
age 6 years ago.
To find ,
Kalyan’s and Kalyan’s mother present
ages.
❥Explanation-:
Let the age of Kalyan’s mother be
-: a yrs
Then ,
Kalyan’s age will be -: 1/3 x A yrs
Now ,
• Six years ago -:
Kalyan ‘s mother age is -: (a - 6 ) yrs
Kalyan’s age -: (1/3 x A - 6 )yrs
Now ,
According to the question,
(A - 6) = 5(1/3 x a- 6)
(A -6) = 5 (a - 18/3)
(A - 6) = (5a - 90/3)
3(A - 6 ) = (5a - 90)
3a - 18 = 5a - 90
3a - 5a = -90 + 18
- 2a = -72
A = -72 / - 2 [ “— sign” will be eliminated]
A = 72 / 2
A = 36
Hence ,
Kalyan’s mother present age -: a
A = 36 yrs
Kalyan’s age -: 1/3 x a
1/3 x 36
= 12 yrs
•Kalyan’s mother present age is 36 yrs
•Kalyan’s present age is 12 yrs