a person travels equal distances with speeds of 8 km / hr , 9 km / hr and 10 km / hr and takes a total time of 47 minutes . the total distance is ?
"let the total distance be 3 x km . then , x / 8 + x / 9 + x / 10 = 47 / 60 x / 3 = 47 / 60 = > x = 2.33 . total distance = 3 * 2.33 = 6.99 km . answer : c"
multiply(multiply(divide(divide(47, const_60), add(add(divide(const_1, 8), divide(const_1, 9)), divide(const_1, 10))), const_3), const_1000)