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It is given that l varies directly as m. Find m when l is 8. - Mathematics

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Sum

It is given that l varies directly as m. Find m when l is 8.

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Solution

Since l varies directly as m.

If `l = 8`

∴ `l/m` = k

⇒ `8/m = 1/3`  ...`[because k = 1/3]`

⇒ m = `8 xx 3` = 24  

Concept: Concept of Direct Proportion
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APPEARS IN

NCERT Mathematics Exemplar Class 8
Chapter 10 Direct and Inverse Proportions
Exercise | Q 71.(iv) | Page 323

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