Jacob always saves 40% of his salary. If his salary decreases by 10% , his savings will decrease by $200. How much is Jacob's original salary?
Question
Jacob always saves 40% of his salary. If his salary decreases by 10% , his savings will decrease by $200. How much is Jacob's original salary?
Solution
Step 1: Let's denote Jacob's original salary as X.
Step 2: Jacob saves 40% of his salary, so his savings are 0.4X.
Step 3: If his salary decreases by 10%, his new salary is 0.9X.
Step 4: His savings would then be 40% of this new salary, or 0.4 * 0.9X = 0.36X.
Step 5: We know that this amount is 200.
Step 6: Simplifying the left side of the equation gives 0.04X = $200.
Step 7: Solving for X, we divide both sides of the equation by 0.04. This gives X = 5000.
So, Jacob's original salary was $5000.
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