the sum of the age of madan and Mohan 16 four years ago madan was three times as older Mohan find there present age
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LET THE AGES OF MADAN TO BE X AND MOHAN BE Y
THEN X + Y = 16
NOW AS GIVEN
4 YEAR BACK
=> X-4 + Y -4= 8
AS
Y-4 = 3 (X-4)
NOW PUTTING IT A LINEAR EQUATION OF X
THEN
X-4 + 3(X -4) = 8
X - 4 + 3X - 12 = 8
4X = 24
X = 6 YEAR
AND AS X = AGE OF MADAN
THEN
AGE OF MOHAN = 16 - 6(AGE OF MADAN)
= 10 YEARS
THEN AGE OF MADAN = 6
AND AGE OF MOHAN = 10
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