Question

By what number must a given number be multiplied to increase it by 12%?

Answer 1

Let the number be x

It is increased by $12\%$

New number$=x+\frac{12}{100}x$

$=\frac{112}{100}x=\frac{28}{25}x$

$\therefore$ The given number should be multiplied by $\frac{28}{25}$ to increase it by $12\%$.