A cistern is normally filled in 8 hours but takes two hours longer to fill because of a leak in its bottom. If the cistern is full the leak will empty it in.
A. 16 hrs
B. 20 hrs
C. 25 hrs
D. 40 hrs
Answer:D
A cistern is normally filled in 8 hours but takes two hours longer to fill because of a leak in its bottom. If the cistern is full the leak will empty it in.
A. 16 hrs B. 20 hrs C. 25 hrs D. 40 hrs