Question

three seventh of a no. is 12 find the number

Answer 1

Step-by-step explanation:

Given:-

three seventh of a no. is 12.

To find:-

find the number?

Solution:-

Let the number be X

Three seventh of the number =

(3/7)X

=3X/7

and given that

Three -seventh of the number=12

=>3X/7=12

=>3X=12×7

=>3X=84

=>X=84/3

=>X=28

Therefore, X=28

Answer:-

The required number=28

Check:-

Three seventh of 28

=>(3/7)×28

=>3×28/7

=>3×4

=>12

Verified the given relation.

Answer 2

$\huge\underline\bold{ Answer:-} \\ Let \: a \: number \: = \: \it{x}\\ Three-sevenths \: of \: a \: number \: = \: \frac{3}{7}\times \: x \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \frac{3}{7}x \\ \implies \frac{3}{7} \: x \: = \: 12 \\ \implies x \: = \: 12 \times \frac{7}{3} \\ \implies \: x \: = \: 4 \: × \: 7 \\ \: \: \: \: x \: = \: 28$