Question

Two-fifths of a number is decreased by three. Find the value of the expression if the number is twenty-five.

Answer 1

Two-fifths of a number is decreased by three. Find the value of the expression if the number is twenty-five.

The answer is:

7

Explanation:

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Answer 2

7

Explanation:

Let x be the number .

Two- fifth of a number=
`(2)/(5)x`

Now, it is decreased by 3=
`(2)/(5)x-3`

We have to find the expression if the number is 25.

To find the value of expression we will substitute x= 25 in the expression.

The expression is given by

`(2)/(5)x-3`

Substitute x=25

Then, we get

`(2)/(5)* 25-3=10-3=7`

Hence, the value of expression if the number is 25=7