UGC NET Math Reasoning Q21

Question

Consider following statements:
A. If a pipe can fill a tank in x hours. the part filled in 1 hour is $\frac{1}{1+X}$
B. If a pipe can empty a full tank in y hours, the part emptied in 1 hour is $\frac{1}{y}$
C. If a pipe can fill a tank in x hours and another pipe can empty the full tank in y hours (where y > x), then an opening both the pipes, the net part filled in 1 hour = $\frac{1}{x} - \frac{1}{y}$
Choose the correct statements from above:

Accepted Answer

3