Question 1137881
A tank measuring 28 cm by 20 cm by 30 cm was filled with 5000 cm^3 of water.
   Find how much water the tank holds when it's full.
   28 * 30 * 30 = 16800 cu/cm when it is full
then find out how much more water required to fill the tank
   16800 - 5000 = 11800 
At 2 p.m., water was continuously added into the tank at a constant rate of 25 cm^3 every minute.
 At 3 p.m., 200 cm^3 of water was drawn out of the tank and subsequently, a further 200 cm^3 was also drawn out at the end of every hour after.
  60*25 = 1500 - 200 = 1300 cu/cm
At what time did the tank start to overflow for the first time?
 1300 cu/cm is added every hour 
find how many hours (h) it take to fill the tank at 1300 cu/cm per hr
1300h = 11800
h = 11800/1300
h = 9.08 hrs 
But the last hr it won't get a chance to draw out the 200 cm^3
After 8 hrs: 5000 + 8(1300) = 15400 cm^3 in the tank, 
16800 - 15400 = 1400 cu/3 space remains
Find no. of min (m) to fill this amt
25m = 1400
m = 1400/25
m = 56 min
Overflow should occur 8 hrs and 56 min from 2 PM
:
Find the time of overflow
  1400 + 856 = 2256 is the time when overflow occurs