SHOW THE EQUATION YOU SET UP10% of what number is 90?

Question

asked Jun 28, 2023 174k views

1 Answer

Ian Robinson · Answer 1 · 2023-07-04T16:24:07+0000

Recall that the x% of y can be computed using the following expression:

$y\cdot(x)/(100)\text{.}$

Now, let n be the number such that its 10% is 90, then we can set the following equation:

$90=n\cdot(10)/(100)\text{.}$

Simplifying the above equation we get:

$90=(1)/(10)n\text{.}$

Multiplying the above equation by 10 we get:

$\begin{gathered} 90*10=(1)/(10)n*10, \\ n=900. \end{gathered}$

Answer:

Equation:

Number: 900.