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A number is mistakenly divided by 2 instead of being multiplied by 2. Find the percentage change in the result due to this mistake.

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Important Questions on Percentages

MEDIUM
CAT
IMPORTANT
How to prepare for Quantitative Aptitude for the CAT>Chapter 8 - Percentages>Level of Difficulty>Q 21
The height of a triangle is increased by 30%. What can be the maximum percentage increase in length of the base, so that the increase in area is restricted to a maximum of 90%?
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CAT
IMPORTANT
How to prepare for Quantitative Aptitude for the CAT>Chapter 8 - Percentages>Level of Difficulty>Q 28
The population of the city of Gotham is 50000 at this moment. It increases by 20% in the first year. However, in the second year, due to immigration, the population drops by 10%. Find the population at the end of the third year, if in the third year, the population increases by 30%.
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CAT
IMPORTANT
How to prepare for Quantitative Aptitude for the CAT>Chapter 8 - Percentages>Level of Difficulty>Q 30
In an examination, Madan obtained 20% more than Sahir, but 40% less than Ravi. If the marks obtained by Sahir is 80, find the percentage marks obtained by Ravi, if the full marks is 200.
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CAT
IMPORTANT
How to prepare for Quantitative Aptitude for the CAT>Chapter 8 - Percentages>Level of Difficulty>Q 2
A fraction is such that if the double of the numerator and the triple of the denominator is changed by +10% and -30% respectively, then we get 33% of 1621. Find the fraction.
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CAT
IMPORTANT
How to prepare for Quantitative Aptitude for the CAT>Chapter 8 - Percentages>Level of Difficulty>Q 8
Kaku's project report consists of 25 pages each of 60 lines with 75 characters on each line. In case, the number of lines is reduced to 55, but the number of characters is increased to 90 per lines, what is the percentage change in the number of pages. (Assume the number of pages to be a whole number).
MEDIUM
CAT
IMPORTANT
How to prepare for Quantitative Aptitude for the CAT>Chapter 8 - Percentages>Level of Difficulty>Q 9

The price of soap is collectively decided by five factors: raw materials, research, labour, advertisements and transportation. Assume that the functional relationship is: Price of soap=k×Raw material cost×Research cost×Labour cost×Advertising cost×Transportation cost. If there are respective changes of 20%, 20%, -20%, 25% and 10% in the five factors, then find the percentage change in the price of soap.

MEDIUM
CAT
IMPORTANT
How to prepare for Quantitative Aptitude for the CAT>Chapter 8 - Percentages>Level of Difficulty>Q 22
If the length, breadth and height of a cube are decreased, decreased and increased by 5%, 5% and 20% respectively, then what will be the impact on the surface area of the cube?
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CAT
IMPORTANT
How to prepare for Quantitative Aptitude for the CAT>Chapter 8 - Percentages>Level of Difficulty>Q 23
Aman's salary is first increased by 25% and then decreased by 20%. The result is the same as Baman's salary increased by 20% and then reduced by 25%. Find the ratio of Baman's initial salary to that of Aman's initial salary.