If Chameli had Rs. 600 left after spending 75% of her money, how much money did she have initially?

Let Chameli have Rs. x in the beginning.
She spent 75% of her money, which is 0.75x.
She had Rs. 600 left after spending 75% of her money.
Therefore, the amount of money she had initially minus the amount she spent is equal to the amount she had left.
This can be represented by the equation:
x - 0.75x = 600
Combining like terms:
0.25x = 600
To solve for x, divide both sides of the equation by 0.25:
x = 600 / 0.25
x = 2400
Therefore, Chameli initially had Rs. 2400.