Question
Given that 1 cu.cum of marble weight 25 gms , the weight of a marble block 28 cm in width and 5 cm thick is 112 kg. The length of the block is :
Answer: Option B
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Let length = `x` cm , then , `x` x 28 x 5 x `25/1000` = 112
`:.` `x = ( 112 xx 1000/25 xx 1/28 xx 1/5) ` cm = 32 cm.
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