Question

Q-1if the cost price of 11 articles is equal to the selling price of 10 articles then find the gain

Q2 rahal's salary I'd increased by 15% and then decreased by15%. Find the percentage change in salary.​

Answer 1

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Let initial salary be x

Increment=15%of x=15/100 × x

New salary=x+15/100×x=115/100x

Now given that 115/100x=9936

x=9936×100/115=8640

And so initial salary is Rs 8,640

Answer 2

Answer:

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