What was the percent decrease in monthly salary of Poonam in the year 2009 as compared to her monthly salary in previous year?

Solution

Jyoti's monthly salary in 2008 = Rs. 25,000

Jyoti's monthly salary in 2009 = Rs. 20,000

=> % decrease = $$\frac{25,000 - 20,000}{25,000} \times 100$$

= $$\frac{1}{5} \times 100 = 20 \%$$

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