a person walking at 10 kmph reaches his office 10 minutes late . if he walks at 15 kmph , he reaches there 10 minutes earlier . how far is the office from his house ?
formula = s 1 * s 2 / s 2 - s 1 * t 1 + t 2 / 60 = 10 * 15 / 5 * 20 / 60 = 30 * 20 / 60 = 10 km answer is d
multiply(add(divide(add(multiply(10, divide(10, const_60)), multiply(15, divide(10, const_60))), subtract(15, 10)), divide(10, const_60)), 10)