If Chameli had Rs 600 left after spending 75% of her money, how much did she have in the beginning?
Let the amount of money which Chameli had in the beginning be x.
It is given that after spending 75% of Rs x, she was left with Rs 600.
Therefore,
(100 − 75)% of x = Rs 600
Or, 25 % of x = Rs 600
Thus, she had Rs 2400 in the beginning.