in covering a distance of 30 km , arun takes 2 hours more than anil . if arun doubles his speed , then he would take 1 hour less than anil . what is arun ' s speed ?
"let the speed of arun = x kmph and the speed of anil = y kmph distance = 30 km we know that distancespeed = timehence 30 x − 30 y = 2 . . . . . . . . . . . ( equation 1 ) 30 y − 302 x = 1 . . . . . . . . . . . ( equation 2 ) equation 1 + equation 2 ⇒ 30 x − 302 x = 3 ⇒ 302 x = 3 ⇒ 15 x = 3 ⇒ 5 x = 1 ⇒ x = 5 hence arun ' s speed = 5 kmph answer : b"
divide(30, multiply(add(1, const_2), const_2))