A man had a certain amount with him. He spent 20% of that to buy any article and 5% of the remaining on transport. Then he gifted Rs. 120. If he is left with Rs. 1400, the amount he spent on transport is :

Let the total amount = x
According to the question,
x × $$\frac{80}{100}$$ × $$\frac{95}{100}$$ = (120 + 1400)
x × $$\frac{4}{5}$$ × $$\frac{19}{20}$$ = 1520
x = $$\frac{1520 × 100}{76}$$
x = 2000
Total amount = 2000
Amount spent on transport
= 2000 × $$\frac{80}{100}$$ × $$\frac{5}{100}$$
= Rs. 80