Question

A and B can do a piece of work in 12 days, C and A in 20 days and B and C
in 15 days, then in how many days will they finish it working togethet?​

Answer 1

Answer:

working together they finishes the work in 10 days .

Step-by-step explanation:

one day work of A and B= 1/12 work -1

one day work of C and A =1/20 work -2

one day work of B and C =1/15 work -3

adding 1,2&3,we get :

one day work of 2[A +B+C]= 1/12 + 1/20+1/15

one day work of 2[A +B+C] = 5+3+4/60

one day work of 2[A +B+C]=12/60

one day work of 2[A +B+C]= 1/5

one day work of [A +B+C] = 1/5×1/2

one day work of [A +B+C] = 1/10 TH WORK

A+B+C complete a piece of work = 10 days

Mark my answer as brainliest..