Question

the ratio of two numbers is 7:5 . if their difference is 42, find the number​

Answer 1

Answer:

let the ratio be 7x and 5x

according to question,

.7x - 5x = 42

=> 2x = 42

=> x = 42/2 = 21

=> x =21

so,

first number = 7x = 7 * 21 = 147

SECOND NUMBER = 5x = 5 * 21. = 105

so, the numbers are 147 and 105.

Answer 2

Answer:

$first\:let\:the\:ratio\:between\:the\: numbers$

$= x$

$so \: the \: ratio \: of \: two \: numbers \: 7x \: and \: 5x$

$according \: to \: question$

$⟹7x - 5x = 42$

$⟹2x = 42$

$\\⟹x = \frac{42}{2}$

$⟹x = 21$

$then,\: first \: number = 7x$

$⟹7 \times 21 = 147$

$second \: number = 5x$

$⟹5 \times 21 = 105$

$so,\:the\:numbers\:are\:147\:and\:105$