A rectangular water tank is 80 cm long, 40 cm broad, and 60 cm high. How many rectangular jars each of them are 20 cm long, 10 cm broad and 15 cm high are required to empty the tank full of water?

Step-by-step explanation:

The volume of the bigger rectangular tank is length * breadth * height

V = l*b*h

V=80*60*40

V=192000

Volume of the smaller rectangular jar that will filled up the bigger one

V=l*b*h

V=20*10*15

V=3000

Then, the amount that will filled it up.

Bigger Volume / smaller volume

192000/3000=64

Therefore, 64 of the smaller volume will filled the bigger volume