Question 1160418: A tank measures 40cm by 30cm by 20cm. It was half filled with water, when a rock was put in to the tank, the water level rose by 20%. how much more water would be required to fill the tank to the brim??
Answer by ikleyn(52834)   (Show Source):
You can put this solution on YOUR website! .
The tank volume is 40*30*20 = 24000 cm^3.
The water volume in the tank originally is 50% of this volume.
After submerging the rock into the water, the occupied volume in the tank is 70% of the tank volume.
Hence, to fill the tank, the needed additional water volume is 30% of the tank volume, i.e.
0.3*24000 = 7200 cm^3. ANSWER
Solved.
-------------
From my post, learn how to get the answer without making unnecessary calculations.
|
|
|
