Aptitude - Decimals & Fractions Online Quiz

Following quiz provides Multiple Choice Questions (MCQs) related to Decimals and Fractions. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.

Questions and Answers

Q 1 - (0.92+0.32+0.12)/(0.092+0.032+0.012)=?

A - 100

B - 81

C - 99

D - 75

Answer : A

Explanation

 (0.92+0.32+0.12)/(0.092+0.032+0.012) 
 = (0.92+0.32+0.12)/0.12(0.92+0.32+0.12) 
 = 1/0.12 = 100

Q 2 - 31.2 x 0.6 =

A - 18.72

B - 18.85

C - 19.02

D - 19.08

Answer : A

Explanation

 31.2 x 0.6=(312/10)x(6/10)=1872/100=18.72

Q 3 - A man spends 1/3rd of his salary on household expenses, 1/3th for rent, 1/6th for travel expenses; the man deposits the rest in a bank. If his monthly deposits in the bank amount Rs.1000, what is his monthly salary?

A - 4000

B - 5000

C - 6000

D - 7000

Answer : C

Explanation

 Let the Total amt is X.
 Therefore: X-(X/3+X/3+X/6) = 1000
 X= Rs.6000

Q 4 - 1/9+2/9+1/3+1/6=?

A - 8/3

B - 7/6

C - 5/6

D - 7/18

Answer : C

Explanation

  1/9+2/9+1/3+1/6 =(2+4+6+3)/18 =15/18 =5/6

Q 5 - If 16.7 + 12.38 - x = 10.09. What is x?

A - 17.89

B - 18.99

C - 16.98

D - 20.09

Answer : B

Explanation

 
 As 16.7 + 12.38 - x = 10.09.  
 Thus x = 16.7 + 12.38 - 10.09 
  16.7  
  12.38  
  ------  
  29.08 
 -10.09   
  ------  
  18.99  
  -----

Q 6 - 0.0169 / 0.013 = ?

A - 0.13

B - 0.013

C - 1.3

D - 3

Answer : D

Explanation

 
 0.0169 / 0.013 = 0.0169/ 0.0130 = 169/130 = 13/10 = 1.3

Q 7 - If 20.40 x X = 12.24. What is X?

A - .6

B - .06

C - 6.60

D - .66

Answer : A

Explanation

    
 20.40 x X = 12.24 
 => X = 12.24 / 20.40 = 1224/2040 = 12/20 = 6/10 = 0.6

Q 8 - 6.42 - 5.42 / (8.92 + 8.9 x 2.2 + 1.12)= ?

A - .118

B - .92

C - 1.5

D - .61

Answer : A

Explanation

 
 6.42 - 5.42 / (8.92  + 8.9 x 2.2 + 1.12)= 
 {(6.4 + 5.4)(6.4 - 5.4)} / (8.9 + 1.1)2 
 (11.8 x 1)/ 102 = 11.8 /100 = .118

Q 9 - If (x - 0.11) / 1.6 = 1.6. What is x?

A - 2.56

B - 1.76

C - 2.67

D - 267

Answer : C

Explanation

 
 (x - 0.11) / 1.6 = 1.6 
 => x = (1.6 x 1.6) + 0.11 =  2.56 + 0.11 
= 2.67

Q 10 - If a student is asked to divide a number by 3, but he multiplied it by 3 and got 29.7. What should be the correct answer?

A - 3.1

B - 3.2

C - 3.3

D - 3.4

Answer : C

Explanation

 
 3x = 29.7 => x =9.9. ∴ correct answer = 9.9 / 3 = 3.3.

aptitude_decimals.htm
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