Quantitative Aptitude Quiz | 06-July-2020 | |Answer key with Solution|

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Quantitative Aptitude Quiz | 06-July-2020 |

|Answer key with Solution|

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Useful for BANK. SSC, RAILWAY, UPSC, PSC, WBCS

 1. Sol. (A) 
Let fraction be (x/y)/ माना भिन्न (x/y) है |
{(x – 1)/ (y – 1)} = 1/3
3x – y = 2 … (I)
and/और, {(x + 1)/ (y + 1)} = ½
2x – y = – 1 … (II)
From (I) and (II)/ समी (I) और (II) से,
x = 3, y = 7
Required answer/अभीष्ट उत्तर = 3 + 7 = 10

 2. Sol. (C)
Let C.P. be Rs. x/माना क्रय मूल्य x रु. है ।
According to the question/प्रश्नानुसार,
(752 – x) = (x – 400) × 1.2 
752 – x = 1.2 x – 480
1232 = 2.2 x
x = Rs. 560

 3. Sol. (C) 
C.P./क्रय मूल्य = {(84 × 100)/ (100 – 20)} = 105
P % = {(126 – 105)/ 105} × 100
= (21/100) × 100 = 20%

 4. Sol. (C) 
P = {(13380)2/ 20070} = 8920

5. Sol. (C) 
Work done by 10 men in 6 days/10 आदमियों द्वारा 6 दिनों में किया गया कार्य = (1/3) of total work/कुल कार्य का (1/3)
Remaining work/शेष कार्य = 1 – (1/3) = 2/3
{(10 × 18)/ 1} = {(15 × d)/ (2/3)}
d = 8 days/दिन

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