Quantitative Aptitude Ques 2059

Question: The single discount equal to three consecutive discounts of 10%, 12% and 5% is

Options:

A) 26.27%

B) 24.76%

C) 9%

D) 11%

Show Answer

Answer:

Correct Answer: B

Solution:

  • Let the amount be Rs. 100. Case I $ 100-10 $ % of $ 100=100-\frac{10\times 100}{100}=90 $ Case II $ 90-12 $ % of 90 $ =90-\frac{90\times 12}{100}=90-10.8=79.2 $ Case III 79.2-5% of $ 79.2-\frac{79.2\times 5}{100} $ $ =79.2-\frac{396}{100}=79.20-3.96=75.24 $ Entire discount $ =100-75.24=24.76 $ In per cent $ =\frac{24.76\times 100}{100}=24.76 $ %
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