P can do a work in 1 4 h of time in which Q alone can do and R can do the same work in same time as ...........

Quantitative Aptitude (Insurance) Time and work

P can do a work in ( 1/4 ) ??h of time in which Q alone can do and R can do the same work in same time as P and Q together will take. If all three working together can complete the work in 16 days, then find in how many days P and R together can complete the work?

200/9 days