Question

A person after paying 10% tax, spend 20% of the remaining on education, 25% of the remaining on food. After all this expenditure he is left with Rs. 2700. Find his income?

Answer 1

Answer:

5000 rupees

Step-by-step explanation:

Hi this requires a bottom up approach.

total money left with the person = 2700

Let his before food expense be x

now we have x - 25% of x = 2700

x - 0.25x = 0.75 x = 2700

x = 3600

Now, Let his before education expense be x

now we have x - 20% of x = 3600

x - 0.2x = 0.8 x = 3600

x = 4500

Let his before tax be x ( his total salary)

now we have x - 10% of x = 4500

x - 0.1x = 0.9x = 4500

x = 5000

So his total salary is 5000 rupees