Question : The monthly salary of Sachdev gets increased by 5%, thereby his salary becomes Rs. 15120 per annum. His earlier monthly salary (before the increase) was:
Option 1: Rs. 1320
Option 2: Rs. 1200
Option 3: Rs. 1240
Option 4: Rs. 1440
Correct Answer: Rs. 1200
Solution :
Let's assume Sachdev's salary = 100 units
After increment of 5%, new salary = 105 units
Sachdev's monthly salary = $\frac{15120}{12}$ = Rs. 1260
According to the question,
105 units ⇒ Rs. 1260
Sachdev's salary
= $\frac{1260×100}{105}$
= Rs. 1200
Hence, the correct answer is Rs. 1200.
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