Sandeep's age after six years will be three-seventh of his father's age. Ten years ago the ratio of their ages was 1:5. What is Sandeep's father's age at present?	Choose the correct answer:  A) 50  B) 40  C) 30  D) 60  E) 70
Let the age of Sandeep and his father before 10 years be x and 5x respectively.   Given that Sandeep's age after six years will be three-seventh of his father's age   ⇒x+16=37(5x+16)⇒7x+112=15x+48⇒8x=64⇒x=8   Sandeep's father's present age   =5x+10=5×8+10=50   50nswer is 50.
<result>A</result>
Sandeep's age after six years will be three-seventh of his father's age. Ten years ago the ratio of their ages was 1:5. What is Sandeep's father's age at present?