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A number decreased by(27) 1/2 % gives 87. The number is:

a. 120

b. 135

c. 110

d. 58

Category : Quantitative Sciences | Answer: 1 2 Years Ago

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100 -27.5 =72.5 %

72.5 % of X = 87

(72.5/100)*X = 87 

72.5X = 87*100

X = 87,00/72.5

  = 120

 

 

2 Years Ago
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Shalinee

Very good explain....but please tell in easy way (Shortcut)except this way..But its also good explaination..☺

2 Years Ago