Question

A number multiplied by 2/5 is 3/20

Answer 1

5x4=20 2 *3 is 6 so 6/20 simplify is you are able yada yada

Answer 2

Answer:

$x=\frac{3}{8}$

Step-by-step explanation:

A number multiplied by 2/5 is 3/20 is expressed like this:

$\frac{2}{5}x=\frac{3}{20}$

Now, we have to solve for $x$. Remember that "a number" always represents the unknown letter.

$\frac{2}{5}x=\frac{3}{20}\\x=\frac{3(5)}{20(2)}=\frac{15}{40}=\frac{3}{8}$

So, the number is 3/8. Let's test it:

$\frac{2}{5}(\frac{3}{8})=\frac{3}{20}$

$\frac{6}{40}=\frac{3}{20}$

$\frac{3}{20}=\frac{3}{20}$

As you can see, the number we found satisfies the expressions.

Therefore, the answer is

$x=\frac{3}{8}$