Question

find a number which when multiplied by 5 is increased by 80

Answer 1

get the number be x
then ATQ..
5x= x+80
5x-x=80
4x=80
x=80/4
x=20

Answer 2

The no. is 20.

Step-by-step explanation:

Let the no. be 'x' which is when multiplied by the 5 gives that no. summation with 80.

According to question,    

                                     ⇒ $x \times 5 = x + 80$

                                     ⇒ 5x = x + 80

                                     ⇒ 4x  = 80

                                     ⇒ x = 20

This is a simple mathematical question. Simple algebraic identities can be used to solve this. Using of BODMAS is the main criteria for getting the right answer.