Question

two numbers are in the ratio 7:5 if the sum of the numbers in840 find the number

Answer 1

$\boxed{\boxed{\large\mathsf{490; 350}}}$
__________________________________

Let the common ratio be $\bf{x}$

Then, the numbers be $\mathsf{7x \: and \: 5x}$

$\underline\text{We know that,}$

$\textsf{Sum of the Numbers = 480 }$

$\underline{Now,}$

=> $\mathsf{7x + 5x = 840}$

=> $\mathsf{12x = 840}$

=> $\mathsf{x = \frac{840}{12}}$

$\boxed{\mathsf{x = 70}}$

$\underline{Now,}$

The numbers are

$\mathbf{7x = 7(70) = 490}$

$\mathbf{5x = 5(70) = 350}$

Hence, the numbers are $\mathsf{490}$ and $\mathsf{350.}$
________________________________

$\Large\mathbf{\# \: Be \: Brainly}$

Answer 2

Let us take the given ratio be 7x: 5x.
Sum of the nos. = 7x+ 5x = 12x.
But it is given , So
ATQ, 12x =840
or x = 840/12 .
Therefore x = 70.
Therefore first no. =7x = 70×7=490.
second no. = 5x = 5× 70 = 350.