SOLUTION: A number is decreased by 30% to 154. What is the original amount?

Algebra ->  Percentages: Solvers, Trainers, Word Problems and pie charts -> SOLUTION: A number is decreased by 30% to 154. What is the original amount?      Log On


   

Question 739622: A number is decreased by 30% to 154. What is the original amount?
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
let x = unknown number

A number is decreased by 30% to 154

x is decreased by 30% to 154

x - 30% of x = 154

x - 0.3x = 154

0.7x = 154

x = 154/0.7

x = 220

So the original amount is 220