1.

The ratio of marks obtained by Amal, Bimal and Komal in an examination is ` 12 : 8 : 15`. Find the marks obtained by Bimal and Komal, if Amal scored 15 marks less than that of Komal.

Answer» Let the marks scored by Amal, Bimal and komal by 12x, 8x and 15x , respectively.
Given that Amal scored 15 marks less than that of Komal.
` rArr 12 x = 15x - 15`
` rArr 3x = 15`
` rArr x = 5`.
`:.` Marks scored by Bimal = 8x = 8(5) = 40.
Marks scored by Komal = 15x = 15(5) = 75.


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