Question

A rectangular tank, 25 cm long and 20 cm wide, contains water to a depth of 12 cm.If 3 litre of water is added into the tank, what will the height of the new water level be

Answer 1

the answer should be 250

Answer 2

see... 25*20*12 is the area of water before addition of new water quantity so you need to find how much height will be of water level keeping length and breadth same thus 3litre = x*25*20

x is your height in cm so total height will be x+12 is your answer