Question

If 20 is subtracted from 4 times a number we get 20 find the number

Answer 1

Let number be=X
A/Q
4×x-20=20
4x-20=20
4x=20+20
4x=40
x=40/4
x=10

Number =10

Proving
4x-20
4×10-20
40-20=20
Here you got 20

Answer 2

Given,

If 20 is subtracted from 4 times a number we get 20.

To find,

The said number.

Solution,

We can simply solve this mathematical problem by using the following mathematical process.

Let, the number = x

(Here, x is an assumed variable, which will help us to easily do the rest of the calculations.)

Now,

4 times of the number = (4×x) = 4x

20 subtracted from the 4 times of the number = (4x-20)

According to the data mentioned in the question,

(4x-20) = 20

4x = 20+20

4x = 40

x = 40/4

x = 10

(This will be considered as the final result.)

Hence, the number will be 10