Aptitude - Decimals & Fractions Online Quiz

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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 - √(0.144/0.009)=?

A - 1

B - 2

C - 3

D - 4

Answer : B

Explanation

 √(0.144/0.009)=√(144/9)=2

Q 2 - If √14=3.74, then √(7/2)=?

A - 1.9

B - 1.87

C - 1.84

D - 1.81

Answer : B

Explanation

 √(7/2)=√((7x2)/(2x2))=√(14/4)=3.74/2=1.87

Q 3 - (0.72 +0.62 +0.52)/(0.072 +0.062 +0.052 )=

A - 210

B - 150

C - 160

D - 100

Answer : D

Explanation

(0.72 +0.62 +0.52)/(0.072 +0.062 +0.052 )= (0.72 +0.62 +0.52)/0.12(0.72 +0.62 +0.52 ) 
 = 1/.01 = 100

Q 4 - If the numerator of a fraction is increased by 150% and denominator is increased by 220%, the resultant fraction is 35/17. What is the original fraction?

A - 5/14

B - 14/9

C - 14/5

D - 9/14

Answer : C

Explanation

Let the original fraction be X/Y:
 New fraction (X+1.5X)/(Y+2.4Y) = 35/17
 (2.5X) / (3.4Y) = 15/26
 X/Y=35x3.4/17x2.5=14/5

Q 5 - If x - 7328.96 = 5169.38. What is x?

A - 12408.34

B - 12488.34

C - 12498.34

D - 12948.34

Answer : C

Explanation

  
 As x - 7328.96 = 5169.38.   
 Thus x = 5169.38 + 7328.96 
  5169.38   
  7328.96  
 --------   
 12498.34 
 --------

Q 6 - if 6.06 x X = 1212/0.5. What is X?

A - 4.04

B - 400

C - 0.4

D - 0.44

Answer : B

Explanation

 
 6.06 x X = 1212/0.5 
 => X = (1212 x 10)/(0.5 x 6.06) 
 = (1212 x 1000) / 3030 
 = 400

Q 7 - If 80.40 / 20 -(-4.2) = x. What is x?

A - 497.8

B - 5.786

C - 947

D - 8.22

Answer : D

Explanation

    
 80.40 / 20 -(-4.2) = 4.02 + 4.2 = 8.22.

Q 8 - .983 + .023 - 3 x .98 x .02 - 1 = ?

A - 0

B - 1

C - 1.09

D - 1.98

Answer : A

Explanation

 
 Given expression is a3 + b3 + 3ab - 1 where a - .98 and b =.02 
 ∴ .983 + .023 - 3 x .98 x .02 - 1 = (a+b)3 -1 
 = (.98 + 0.02) - 1 = 0

Q 9 - If 185 x 28 = 5180 then what is 51.8 / 18.5?

A - 2.8

B - 28

C - 280

D - 0.28

Answer : A

Explanation

 
 51.8 / 18.5 = 518/185 = 28/10 = 2.8

Q 10 - If a tailor has 37.5 m of cloth and he has to make 8 pieces out of meter of it. How many pieces can be made?

A - 320

B - 360

C - 300

D - 420

Answer : C

Explanation

 
Required pieces = 37.5 x 8 = 300
aptitude_decimals.htm
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