Question

Two years ago, Kirti was four times as old as her
daughter Sunidhi. Ten years hence, Kirti will be two
times as old as her daughter. Find the ratio of the
present ages of Kirti and her daughter.
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Answer 1

Answer:

heyy i am Sunidhi .

let Kriti present age be c and sunidhi present age be y

now ,

according to the condition

2 years ago

Kriti = y-2

Sunidhi = x-2

y-2 = 4(x-2)

y-2= 4x-8

y-4x=-6••••••eq 1

now

according to the next condition

after 10 year

Kriti = y+10

Sunidhi = x+10

y+10=2(x+10)

y+20=2x+20

y-2x=20-10

y-2x=10•••••• eq2

subtract 1and 2

y-4x-(y-2x)= -6(-10)

-2x=-16

x=8

now put x=8 in 1

y-4x=-6

y-4×8=-6

y= -6+32

y= 26

now ratio = Kriti age

_______

Sunidhi age

= 26

__

8

= 13

__

04