Problem: shahrukh starts from barabanki to fatehpur , 1 hour after ajay starts . shahrukh meets kajol 1.5 hours after shahrukh starts . if the speed of shahrukh is at least 20 km / h faster than the speed of kajol . what is the minimum speed of shahrukh to overtake ajay , before he meets kajol ?
Rationale: explanation : let t be the time after kajol starts , when she meets ajay , then \ inline t = \ frac { 300 } { ( x + y ) } this should be less than 2.5 or ( x + y ) > 120 since y = \ inline \ frac { 3 x } { 2 } \ inline \ rightarrow y > 72 this ( y > 72 ) is greater than 67.5 km / h and hence shahrukh will always overtake ajay before he meets kajol . answer : d
annotated_formula: divide(subtract(multiply(multiply(20, const_3), const_10), multiply(20, const_3)), add(const_3, add(const_4, const_1)))