Question

If Gayathri had Rs 600 left after spending 75% of her money, how much did she have in the beginning?

Answer 1

Suppose Gayathri had Rs X in the beginning. 

Then money Spend = 75 % of X 

= \(\frac{75}{100}\)X 

= \(\frac{3X}{4}\)

Money left with her 

= X – \(\frac{3X}{4}\)

= \(\frac{4X-3X}{4}\)

= \(\frac{X}{4}\)

But it is given that money left = Rs 600 

i.e. \(\frac{X}{4}\) = 600 

X = 600 x 4 

= 2400 

∴ Gayathri had Rs 2,400