Question

a b c can do a work in 18,24,36 days respectivelys a left before 6 days & after 3days of a b left then how many days work complete.​

Answer 1

A left 6 days before then A done the work in 12 days.B done the work after three days of A,then 12+3=15.c done in 36 days

Answer 2

Answer:

11.66 days

Step-by-step explanation:

a b & c can do work in 18, 24 ,& 36 days respectively

let total work be 72 ( LCM of these 3 )

so efficency of a = 4

that of b = 3 and c = 2

let they work together for x days then

x ( 4+3+2) = 9x work then done

as a left the work 6 days before completion and b left after 3 days of a

so b and c work together for 3 days and c alone work for 3 days

so total work = 9x + 3 ( 3+2) + 2× 3 = 72

=> 9x + 15 + 6 = 72

=> 9x = 51

=> x = 51 / 9

total no. of days required for completion of work is 51/9 + 6 = 11. 66