Question

If P can do a work in 6 days and Q can do the same work in 8 days. If R who can do the same work in 12 days, joins them, then the work will be completed in how many days?​

Answer 1

Answer:

3 days

Step-by-step explanation:

p = 6

Q = 8

R = 12

L.C.M = 24

one day work

p = 24/6 = 4

Q = 24/8 = 3

R = 24/12 = 2

Total work = 24

one day work of P,Q,R = 4+3+2= 9

9+9= 18 (2 day)

18+9= 27

= 2.6... (2 1/2)

~ 3 days