Question

A b c can complete a work separately in 24 36 48 days respectively.They started together

Answer 1

Answer:  Required Days : 1

44/13 Days   explanation:   Theory:  

this Question, it has given that ,"There are three Person A,B,C ; They all are doing same work.  ✏ Let A' be the First Person , ---(1)  ✏ Let B be the Second Person ---(2)  ✏ Let C be the third Person ---(3)   Now, According to the Question;  ✒ To Find : How many can takes all person do this same work ?  Let All person can Do this work in 1/S Days!   ✒ Method of Solution::  Adding both Equation as reciprocally   1/S✒ 1/A + 1/B + 1/c   1/S✏ 1/24 + 1/36 + 1/48  1/S✏ 6+4+3/144  ✒ 1/S= 13/144  •°• S= 14413  Days!  Hence, All can do this same work in 144/13  Days.