a person travels equal distances with speeds of 5 km / hr , 6 km / hr and 7 km / hr and takes a total time of 47 minutes . the total distance is ?
"let the total distance be 3 x km . then , x / 5 + x / 6 + x / 7 = 27 / 53 27 x / 53 = 47 / 60 = > x = 1.54 total distance = 3 * 1.54 = 4.61 km . answer : a"
multiply(multiply(divide(divide(47, const_60), add(add(divide(const_1, 5), divide(const_1, 6)), divide(const_1, 7))), const_3), const_1000)