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3.In In a library 136 copies of a certain bookrequire a shelf-length of 3.4 metre. Howmany copies of the same book would occupya shelf-length of 5.1 m ? |
| Answer» 204 copies will occupy a shelf of length 5.1m.Step-by-step EXPLANATION: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. ∴ x 136 = 5.1 3.4 ⇒ 136×5.1=x×3.4 ⇒ x= 3.4 136×5.1 ⇒ x=204 ∴ 204 copies will occupy a shelf of length 5.1m. | |