Problem Solving (PS) | Re: George is a moody person. In the beginning, h

George is a moody person. In the beginning, he works at a rate such that he can finish a piece of work in 24 hrs, but he only works at this rate for 16 hrs. After that, he works at a rate such that he can do the whole work in 18 hrs. If George is to finish this work at a stretch, how many hours will he take to finish this work?
a) 6 hrs
b) 12 hrs
c) 18 hrs
d) 15 hrs
e) 22hrs