Question

A whole number is increased by $7$ and the new number so obtained is multiplied by $5$; the result is $45$.Find the number.

Answer 1

Let the required whole number$=x$

Then $(x+7)\times 5=45$

$\Rightarrow x+7=\frac{45}{5}=9$

$\Rightarrow x=9-7=2$

$\therefore$Required number$=2$