Two cities between which distance is equal to 105 km at the same time in opposite the directions were left by two cyclists one of them speeded at 12 km of the h and other 15 km/h What distance will be between them in 3 hours

267
1) 12 + 15 = 27 km/h - the speed of removal 2) 27 * 3 = 81 km - will pass in 3 hours 3) 105 + 81 = of 186 km - will be between them in 3 hours.
250
Answer add