216. 30% of 80/? = 24

1. 1. 3/10

   
   
   

   2. 3/17

   
   
   

   3. 1

   
   
   

   4. 2

   
   
   

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1. View Hint View Answer Discuss in Forum

   Let 30% of 80/y =24
   ⇒ 24y = (30 x 80)/100
   

   Correct Option: C

   Let 30% of 80/y =24
   ⇒ 24y = (30 x 80)/100
   ∴ y = (30 x 80)/ (24 x 100) =1

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217. 8% of 96 = ? of 1/25

1. 1. 19.2

   
   
   

   2. 7.68

   
   
   

   3. 1.92

   
   
   

   4. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   Let 8% of 96 = y of 1/25
   ⇒ (8 x 96)/100 = y/25

   Correct Option: D

   Let 8% of 96 = y of 1/25
   ⇒ (8 x 96)/100 = y/25
   ∴ y = (8 x 96 x 25)/100 = 192

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218. If A is 90% of B, then what percent of A is B ?

1. 1. 90

   
   
   

   2. 190

   
   
   

   3. 101.1

   
   
   

   4. 111.1

   
   
   

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1. View Hint View Answer Discuss in Forum

   ∵ A = 90% of B
   ⇒ A = (90 x B)/100
   Let C% of A = B
   Then, (C x A)/100 = B

   Correct Option: D

   ∵ A = 90% of B
   ⇒ A = (90 x B)/100
   Let C% of A = B
   Then, (C x A)/100 = B
   ⇒ [C x {(90 x B)/100}] / 100 = B
   ∴ C = (100 x 100) / 90 =111.1

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219. (A% of B + B% of A) is equal to ?

1. 1. A% of B

   
   
   

   2. B% of A

   
   
   

   3. 2% of AB

   
   
   

   4. AB% of 3

   
   
   

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1. View Hint View Answer Discuss in Forum

   A% of B + B% of A =AB/100 + AB/100

   Correct Option: C

   A% of B + B% of A =AB/100 + AB/100
   = 2AB/100 = 2% of AB

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220. If 31% of a number is 46.5,the number is ?

1. 1. 150

   
   
   

   2. 155

   
   
   

   3. 160

   
   
   

   4. 165

   
   
   

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1. View Hint View Answer Discuss in Forum

   Let 31% of A = 46.5
   ⇒ (31 x A)/100 = 46.5

   Correct Option: A

   Let 31% of A = 46.5
   ⇒ (31 x A)/100 = 46.5
   ∴ A = (46.5 x 100) / 31 = 150

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