Question

47 is added to the product of 71 and
an unknown number. The new number
is divisible by 7 giving the quotient 98.
The unknown number is a multiple of​

Answer 1

Question :------- we have to find unknown number ....

Given :- 47 is added to product of 71 and unknown no. and the number is divisible by 7 ....

$\green{\bold{\underline{\underline{Step\:by\:step\:explanation:}}}}$

let the unknown number be = x .

A/q,

when 47 is added to 71 * x it is divisible by 7 .

so,

$( \frac{71 \times x + 47)}{7} = 98 \\ \\ 71x + 47 =686 \\ \\ 71x = 686 - 47\\ \\ x = \frac{639}{71}$

$\</strong><strong>h</strong><strong>u</strong><strong>g</strong><strong>e</strong><strong>\red{\boxed{\sf </strong><strong>x</strong><strong>=</strong><strong>9</strong><strong>(</strong><strong>Ans</strong><strong>)</strong><strong>}}$