Question

a,b,c together can finish a piece of work in 4 days, a alone can do it in 12 days and b in 18 days ,then c alone can do it in???

Answer 1

abc=4 days
a=12
b=18
c=x
a.t.q
a+b+c=4 days
12+18+x=4 days
30+x = 4 days
x=30- 4
x = 26