The price of an article was increased by r%. Later the new price was decreased by r%. If the latest price was Rs. 1, then the original price was :
Options:
A.Rs. 1
B.Rs. $$\frac{{1 - {r^2}}}{{100}}$$
C.Rs. $$\frac{{\sqrt {1 - {r^2}} }}{{100}}$$
D.Rs. $$\left( {\frac{{10000}}{{10000 - {r^2}}}} \right)$$
Answer: Option D

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More Questions on This Topic :

Question 1. The difference of two numbers is 15% of larger sum. The ratio of the larger number to the smaller number is :
  1.    23 : 17
  2.    11 : 9
  3.    17 : 11
  4.    23 : 11
Answer: Option A
Question 2. A number if reduced by 25% becomes 225. By what percent should it be increased so that it becomes 375 ?
  1.    25%
  2.    30%
  3.    35%
  4.    75%
Answer: Option A
Question 3. Out of two numbers, 40% of the greater number is equal to 60% of the smaller. If the sum of the numbers is 150, then the greater number is :
  1.    70
  2.    80
  3.    90
  4.    60
Answer: Option C
Question 4. In an examination, 35% of total students failed in Hindi, 45% failed in English and 20% failed in both. Find the percentage of those students who passed in both the subjects ?
  1.    45%
  2.    35%
  3.    20%
  4.    40%
Answer: Option D
Question 5. An army lost 10% of its men in war. 10% of the remaining died due to disease and 10% of the rest were declared disabled. Thus the strength of the army was reduced to 729000 active men. The original strength of the army was :
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  3.    1200000
  4.    1100000
Answer: Option B
Question 6. An individual pays 30% income tax. On this he has to pay a surcharge of 10%. Thus, the net tax rate, he has pay is :
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  2.    40%
  3.    33%
  4.    27%
Answer: Option C