Question

Lakshmi raji sujatha can do a piece of work in 36 54 72 days respecitvely al the three began to work togeter but lakshami left 8 days before the completion of the work and raji left 12 days before the completion of work. Only sujatah worked till the end. In how many days was the work completed

Answer 1

lakshmi=8day = 48 unit

raji = 4day= 48 unit

so, 216+96 = 312

sujata= 312/3= 104

so,

104+8+4=116 days