Question

the ratio of three numbers is 5 : 7 : 9 and their sum is 315. Find the numbers​

Answer 1

Answer:-

$solve = = > let \: x \: the \: three \: numbers \: be \: x \: = 5x,7x \: and \: 9x \\ \\ = > therefore,5x + 7x + 9x = 315 \\ \\ = > 21x = 315 \\ \\ = > x = \frac{315}{21} \\ \\ = > x = 15 \\ \\ therefore,three \: numbers \: are \\ \\ 5 \times1 5 = 75 \\ 7 \times 15 = 105 \\ 9 \times 15 = 135 \\ \\ = > so,LHS=RHS \: for \: correct \: verification \\ \\ 75 + 105 + 135 = 315 \\ \\ 315 = 315 \: \: hence,proved.$