Question

After sending 10percent of my weeekly income to my mother ,I spent 25percent of the remaining and was left with rs 540 .find my weekly income​

Answer 1

Answer:

800

Step-by-step explanation:

Let x be the weekly income

10% of x = 10/100 * x

=> x/10

25% of the remaining = (25% of 90%) of x

=> 25/100 * 90/100 * x

=> 9x/40

Remaining = 540

=> x/10 + 9x/40 + 540 = x

=> 4x + 9x/40 + 540 = x

=> 13x/40 + 540 = x

=> 540 = x - 13x/40

=> 40x - 13x / 40 = 540

=> 27x/40 = 540

=> x = 540 * 40 / 27

=> x = 800