At present, father’s age is 4 times more than that of his son. 6 years ago father’s age was 10 times more than that of his son. What is their present age?
সমাধান
সঠিক উত্তর: Option B
suppose, age of son = x years age of father=4x years here, (4x-6)=10(x-6) or,6x=54 or,x=9 so, age of son=9 years age of father=36 years