I believe the answer is c :)
Answer:
36 minutes when both pipes are working together
Step-by-step explanation:
capacity of tank = 5400 liters
Pipe A flow per mint. = 5400/90 = 60 liters per mint.
Pipe B flow per mint. = 5400/60 = 90 liters per mint.
Flow of A + B per mint. 60 + 90 = 150 liter per mint.
Therefore, 5400 / 150 = 36 minutes to fill the tank
Answer:
C) 6 to 5
Step-by-step explanation:
if there is 6 new books there is 5 used books (11 - 6 = 5)
so new to used is 6 to 5
Answer:
2d+44
Step-by-step explanation:
Multiply all numbers without variables:
11x4=44
Add equations:
2d+44
Hence, the correct answer is 2d+44