1. A's salary is 20% less than B's salary. B's salary is how much percent more than A's salary?
2. The price of sugar increases by 20%, then how much percent the consumption of sugar should be decreased so
that the expenditure on sugar remains constant.
3. The salary of worker was first increased by 30% and there after decreased by 10%, what is the effect in his salary?
4. If the price of an article is increased by 40%, as a result its sale gets reduced by 10%. What is the effect on
revenue?
5. In a rectangle, length is increased by 20% while its breadth is decreased by 10%. Find the percentage of change of its area.
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1
Answer:
1. differences of their salary is 20. thn 20/80*100=25%
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