Question

The sum of the age of madan and mohan is 16 years four years ago madan was 3 times as old as mohan find their ptesent ages

Answer 1

let madan x
Mohan is 16-x
before 4 years. madan=x+4,mohan is4+(16-x)
x=3(16-x)
x=48-3x
x+3x=48
x=12
Madan is 12
Mohan is16-12=4 years

Answer 2

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