Shreya is thrice as old as anika .four years ago the ratio of anika age to that of shreya was 1:7 .find their present age
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let anika be x yrs
then, shreya be 3x yrs
4yrs ago,
let anika's age be (x-4) yrs
shreya's age be (3x-4) yrs
A.T.Q.
x-4/3x-4 = 1/7
7(x-4) = 1(3x-7)
7x -28 = 3x-4
7x-3x = 28-4
4x = 24
x = 6
so, present age of anika is xyrs,i.e., 6yrs
present age of shreya is, 3xyrs,i.e., 3*6yrs = 18yrs
HOPE THIS WILL HELP YOU
then, shreya be 3x yrs
4yrs ago,
let anika's age be (x-4) yrs
shreya's age be (3x-4) yrs
A.T.Q.
x-4/3x-4 = 1/7
7(x-4) = 1(3x-7)
7x -28 = 3x-4
7x-3x = 28-4
4x = 24
x = 6
so, present age of anika is xyrs,i.e., 6yrs
present age of shreya is, 3xyrs,i.e., 3*6yrs = 18yrs
HOPE THIS WILL HELP YOU
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