Ten years ago, Kumar was thrice as old as Sailesh was but 10 years hence, he will be only twice as old. Find Kumar’s present age.
Choose the correct answer
A) 60 years  B) 80 years  C) 70 years  D) 76 years  E) 86 years
Let Kumar’s present age be x years and Sailesh’s present age be y years.   Then, according to the first condition,   x - 10 = 3(y - 10) or, x - 3y = - 20 ..(1)   Now. Kumar’s age after 10 years = (x + 10) years   Sailesh’s age after 10 years = (y + 10)   (x + 10) = 2 (y + 10) or, x - 2y = 10 ..(2)   Solving (1) and (2), we get x = 70 and y = 30   Kumar’s age = 70 years and Sailesh’s age = 30 years.   ANSWER:70 years
<result>C</result>
Ten years ago, Kumar was thrice as old as Sailesh was but 10 years hence, he will be only twice as old. Find Kumar’s present age.