Question

In a library 136 copies of certain bookrequire a shelf of 3.4m How many copies of the same book of occupy a shelf of 20.4 m​

Answer 1

Answer:

Let x be the number of copies that would occupy a self-length of 5.1m. 

Number of copies 136 x Length the self ( in m ) 3.4 5.1 Since, the number of copies and the length of the shelf are in direct variation.

∴  x136=5.13.4

⇒  136×5.1=x×3.4

⇒  x=3.4136×5.1

⇒  x=204

∴  204 copies will occupy a shelf of length 5.1m

Step-by-step explanation:

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