Question

What is the value of x?

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Answer 1

Using basic proportionality theorem

`\\ \sf\longmapsto (x)/(10)=(42)/(15)`

`\\ \sf\longmapsto 15x=42(10)`

`\\ \sf\longmapsto 15x=420`

`\\ \sf\longmapsto x=(420)/(15)`

`\\ \sf\longmapsto x=28`