Question

On decreasing a number by 18%, it becomes 697. Find the number.

Answer 1

Answer:

See your Answer here:-

Step-by-step explanation:

Let the original number be x

Here

New number = (1−18/100) of original number

Substituting the values

697=(1−18/100)×x

Taking LCM

697=[(100−18)/100]×x

By further calculation

697=82/100×x

So we get

x=(697×100)/82

x=(697×50)/41

By further simplification

x=17×50

x=850

Therefore, the original number is 850.

Answer 2

Answer:

or x - 18%=697

or x - 18 Into (*) /100 = 697

or x- 18*x *1/100 =697

or x/1 - 18x * 1/100 = 697

or x * 100 - 18x * 1/ 100 = 697

or 100x-18x/100 =697

or 82x/100=697

or 82x= 697*100

or 83x = 69700

or x = 69700/82

or x = 850