Question

If 40% of a number is 36 , find 10% of that number

Answer 1

10% of the number = 9

Explanation:

To find 10% of a number, we can multiply the number by 0.10.

`\sf 10\% \textsf{ of a number } =Number \cdot 0.10`

We know that 40% of the number is 36, so we can set up a proportion to find the number itself:

40% of a Number = 36

0.40 of a Number = 36

Divide both sides by 0.40.

`\sf Number = (36 )/(0.40)`

Number = 90

Now that we know the number is 90, we can find 10% of it by multiplying by 0.10.

10% of 90

= 0.10 × 90

= 9

Therefore, 10% of the number is 9.

Answer 2

10% = 9

Explanation:

expressing 10% as a fraction of 40% , that is

`(10)/(40)` ( divide numerator and denominator by 10 )

=
`(1)/(4)`

Then

`(1)/(4)` of 36

=
`(1)/(4)` × 36 ( cancel 4 and 36 by 4 )

= 1 × 9

= 9