pls solve



let d be a two digit number. if half of d exceeds one-third of d by the sum of the digits in d, then the sum of the digits in d is

let d be a two digit number. if half of d exceeds one-third of d by the sum of the digits in d, then the sum of the digits in d is

A & B travelled around a circular path in uniform speed ,startinf from diameteratically opposite points at the same time .They first meet each other when B has travel led 100 m an meet  again   60 m before  A completed one round.The circumference of the park is