25 decreased by one fifth of a number is 18 find the number

Mathematics · College · Mon Jan 18 2021

Answered on

Let the number be x

Then, according to question, 

1/5x  - 25 = 18

Now, Transposing - 25 to other side, we get

1/5x = 18 + 25

1/5x = 43

Cross-Multiplying,  we get

x = 43  × 5

x = 215

 

Hence, the number is 215