1.There are 6 Arts books in a bookcase.The number of Arts books in that bookcase is 25% that of Scientific
fictions,and the number of Scientific fictions is 40% of the whole number of books .How many books are there
in the bookcase?
2.Bobby has one piece of rectangular building block and one piece of cubic building block .The rectangular
block has length 4.5cm and breadth 4cm while each side of the cubic block is 3cm.It is given that the volumes
of the two building blocks are the same.Find the height of the rectangular block.
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