Parathyroid hormone secretion increases in response to
Answers
Answered by
0
Answer:
SORRY
Explanation:
Two pipes A and B can fill a petrol tanker in 15 and 12 hours respectively. A
third pipe C can empty the whole tanker in 6 hours. If the tanker is full and all
three pipes are opened together, how long would they take to empty it?
Similar questions