A person's present age is two-fifth of the age of his mother. After 8 years, he will be one-half of the age of his mother. How old is the mother at present?
বিকল্পসমূহ (নিজের উত্তর যাচাই করতে ক্লিক করুন):
সঠিক উত্তর
2 (40 years)
বিস্তারিত ব্যাখ্যা ও বিশ্লেষণ:
Let mother's present age be x years
Therefore, person's present age = 2x/5 years
2x/5 + 8 = (x + 8)/2
or, x = 40 years
