Answer:
The first pump can do 1/0 of the work per hour
Together they do 1/6 of the work per hour
The second alone would do (1/6 - 1/10) of the work per hour.
1/6 - 1/10 = 1/15
The second pump would take 15 hours to do the work.
C) 15
Hope this helps. :)
Weight of man and paint = 160 + 5 = 165 total pounds.
Gravitational force is independent of the path taken so we can ignore the radius of the silo.
Work done = total weight x height
The problem says he climbs to the top so overall height is 90 feet
Work = 165 lbs x 90 ft = 14,850 ft-lbs
Answer:
2 rolls of green ribbon
4 rolls of yellow ribbon.
Step-by-step explanation:
2 x 9 = 18
4 x 1 = 4
18 + 4 = 22