Question

4/5 of a number is 20 less than the original number find the number

Answer 1

Answer:

-100

Step-by-step explanation:

Let the number be 'x'

4/5 × x = x - 20

=> 4x/5 - 20 = x

=> 4x - 100 = 5x

=> -x = 100

=> x = -100

Answer 2

Given : 4/5 of a number is 20 less than the original number

To find : The said number.

Solution :

We can simply solve this mathematical problem by using the following mathematical process. (our goal is to determine the said number)

Let, the number = x

According to the data mentioned in the question,

x - 20 = (x × ⅘)

x - 20 = 4x/5

5x - 100 = 4x

5x - 4x = 100

x = 100

So, the said number is = x = 100

(This will be considered as the final result of the given mathematical problem.)

Hence, the said number is 100