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

7. d. 64

8. i. 32

9. c. 125

10. j. none of the above

11. d. 81

12. i. 216

13. e. none of the above

14. g. 240

15. e. none of the above

16. g. 32

17.   e. none of the above

answer: 1, 3 and 5 are correct

step-by-step explanation: