Question

A tank measures 2 m in length, 1.6 m in width and 1 m in depth. Water is there up to 0.4 m height. Bricks measuring 25 cm X 14 cm x 10 cm are put into tank so that the water may come up to the top. Each bricks absorbs water equals to 1/7th of its own volume. How many bricks will be needed?

Answer 1

I apologise for my handwriting. Hope this helps.