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6 years ago, sita was 3 times as old as geeta.after 12 years,sita would be twice as old asgeeta . How old they are now?

Posted by Ft.Pahadi Bisht 8 years, 6 months ago

CBSE > Class 08 > Mathematics

2 answers

Rakesh Rana 7 years, 1 month ago

Thank you

1Thank You

Anu Mahal 8 years, 6 months ago

Let present ages of seeta & geeta are "x" & "y" years respectively.

Six years ago,

seeta was "x-6" years and geeta was "y-6" years.

ATQ,

x-6=3(y-6)

x-6=3y-18

x-3y=-18+6

x-3y=-12............eq.1

After 12 years,

seeta will be x+12 years & geeta will be y+12 years.

ATQ,

x+12=2(y+12)

x+12=2y+24

x-2y=24-12

x-2y=12.......eq.2

subtract eq.2 from eq.

x-3y -(x-2y)=-12-(12)

x-3y-x+2y=-12-12

-y=-24

y=24 years ( put this in eq.1)

x-3y=-12

x-3(24)=-12

x-72=-12

x=-12+72

x = 60 years

age of seets =x= 60 years

age of geeta = 24 years

5Thank You

ANSWER

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