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    A man’s monthly salary increased from Rs. 42,000 to Rs. 57,000. What is the percentage (rounded off to 1 decimal place) increase in his monthly salary
    Question

    A man’s monthly salary increased from Rs. 42,000 to Rs. 57,000. What is the percentage (rounded off to 1 decimal place) increase in his monthly salary?

    A.

    35.7%

    B.

    55.7%

    C.

    37.5%

    D.

    57.5%

    Correct option is A

    Given:
    Original salary = Rs. 42,000
    New salary = Rs. 57,000
    Formula Used:
    Percentage Increase=(IncreaseOriginal Salary)×100\text{Percentage Increase} = \left(\dfrac{\text{Increase}}{\text{Original Salary}}\right) \times 100​​
    Solution:
    Increase = 57,000 − 42,000 = 15,000
    Percentage Increase =  (1500042000)×100=35.714%\left(\dfrac{15000}{42000}\right) \times 100 = 35.714\%​​
    Rounded to 1 decimal place = 35.7%
    The percentage increase in his monthly salary is 35.7%.

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