Question

after spending 80% of his income and giving 10% of the remainder in a charity a man has rupees 46260 left with him find his income

Answer 1

hey

Let the man's income be x

80% of x = 80/100 × x  0.8x

Remaining Amount of the man's salary will:

x - 0.8x = 0.2x

Find 10% of the remainder: 

10% of 0.2x = 10/100 × 0.2x = 0.02x

Add the the two to find the total he has used from his salary

0.8x + 0.02x = 0.82x

Therefore this man has used 0.82x of his salary. Find the remainder:

x - 0.82x = 0.18x

Therefore what is left of his salary = 0.18x ( we are given that what is left of his salary is 46260)

Hence:

0.18x = 46260
x = 46260/0.18

x= 257,000

Therefore this man's salary was 257,000
Hope it helps to you.