Quantitative Aptitude Quiz | 29-May-2020 |
|Bank, SSC, PSC, Railway|
(With Answer key and Solutions)
6. Sol. (D)
According to the question/ प्रश्नानुसार,
{(x × 2 × 12)/ 100} + [{(3000 – x) × 2 × 10}/ 100] = 6480
24x + 600000 – 20x = 648000
4x = 48000
x = 12000
7. Sol. (B)
(a2 + 1)/ a = 3
a + (1/a) = 3
a3 + (1/a3) = (3)3 – 3 × 3
= 27 – 9 = 18
8. Sol. (B)
49 × 6 × (17/2) = 119 × 7 × ?
? = 3 days/ दिन
9. Sol. (D)
(1/a) + (1/b) + (1/c) = 2
On solving this we get,
ab + bc + ac = 2abc
(a + b + c)2 = a2 + b2 + c2 + 2 (ab + bc + ca)
52 = 8 + 2 × 2abc
abc = 17/4
10. Sol. (B)
According to the question/ प्रश्नानुसार,
Volume of the cuboid/ घनाठका आयतन = 8 × 6 × 4 = 192 cm.3/ सेमी.3
Required quantity/ अà¤ीष्ट मात्रा = 216 – 192 = 24 cm.3/ सेमी.3
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