Three tanks `T_(1),T_(2)` and `T_(3)` are sitting on three weighing scales `s_(1),s_(2)` and `s_(3)` respectively. Tank `T_(1)` has a spout, as shown and water has been filled in it to a level just below the spout. The other two tanks are empty. Reading of the three scales are 20kg, 4kg and 3kg respectively A 4kg body is put into the tant `T_(1)` and it floats in the water. Now the reading of scale `s_(3)` was found to be 4.5kg. what is the reading of other tow scales?
