Kavya and Sana with Dolls puzzle

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Kavya and Sana with Dolls puzzle

While playing with dolls,
Kavya realised that if she had 15 more,
she would own a quarter as many dolls as Sana.

But if Sana owned 20 fewer,
she would still have five times more dolls than Kavya.

How many dolls does Kavya own?

Click here for Answer

Explanation :
Dolls with Kavya - x
Dolls with Sana - y
x+15=y/4 => y=4x+60
y-20=5x => y=5x+20
=> 4x+60=5x+20
=> x=40 and y=220

So Kavya owns 40 Dolls
and Sana owns 220 Dolls

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