Free notebooks were distributed equally among children of a class. The number of notebooks each child got was one-eighth of the number of children. Had the number of children been half, each child would have got 16 notebooks. Total how many notebooks were distributed ? Select
A) 689 B) 569 C) 123 D) 512 E) 456
Explanation:   Let total number of children be x   Then, x x1/8X=x/2*16,x=64   Number of notebooks =1/8x^2=(1/8*64*64)= 
<gadget id="calculator">(1/8*64*64)</gadget>
<output>512</output>
512   Answer:512
<result>D</result>
Free notebooks were distributed equally among children of a class. The number of notebooks each child got was one-eighth of the number of children. Had the number of children been half, each child would have got 16 notebooks. Total how many notebooks were distributed ?