Question

A father gives 1%of his monthly income to his two sons as pocket money. the elder son get 80% of total amount of money given and he spend 80% of his share. if he saved rupee 20 per month,determine father's monthly income

Answer 1

Let the income be x
income given= x/100
money given to elder son= 80℅ of x/100
=80x/10000
saving of elder son= 20℅of 80x/10000
=20/100×80x/10000
=x/625
ATQ
x/625=rs20
x=625×20
x= rs 12500
Father's monthly income is rs 12500
hope it helps you