After an increase of 5 % , John 's monthly salary becomes $ 2205 . Find the original salary.
Question
After an increase of 5 % , John 's monthly salary becomes $ 2205 . Find the original salary.
Solution
Step 1: Understand that the new salary ($2205) is 105% of the original salary because it was increased by 5%.
Step 2: To find the original salary, we need to calculate what 100% is. We can set up the equation: 105/100 = 2205/x.
Step 3: Cross multiply to solve for x. 105x = 2205100.
Step 4: Simplify the equation to find x. x = (2205*100) / 105.
Step 5: Calculate the value of x. x = 2100.
So, John's original salary was $2100.
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