A father gives 1% of his monthly income to his two son as pocket money.the elder son gets 80% of the total amount of money and he spends 80% of his share . If he save Rs 20 per month. Determine father's monthly income. (Plz answer this Question soon, exam is approaching)

**Ok**

**Now Let His Total Salary Per Month Be Rs x.**

**Now **

**Amount Given To His Sons = 1/100*x = x/100**

**Now Amount Received By Elder Son = 80/100*x/100 = 80x/10000 = 8x/1000 = x/125**

**Now Its Given That He Spends 80% Of His Share**

**So Amount Saved = 100-80 = 20%**

**20/100*x/125 = x/625**

**Now This Equal Rs 20**

**x/625 = 20**

**x = Rs 12500**