D) Daron
11) Meena is twice as old as Shina. Three years back,
Meena was thrice as old as Shina. What is the present
age of Meena?
A) 12 years
B) 8 years
C) 6 years
D) 4 years
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Given:
Age of Meena is twice as that of Shina.
Three years ago Meena was thrice as old as Shina.
To find:
Present age of Shina.
Solution:
Let the present age of Shina be x years.
The present age of Meena = 2x years
Three years ago:
Age of Meena = 2x-3 years
Age of Shina = x-3 years
The equation will be as follows:
2x-3 = 3(x-3)
2x-3 = 3x-9
x = 6
Therefore the present age of Shina is 6 years.
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