How good are you with figures and formulas? Find out with these Mathematics past questions and answers. This Test is useful for both job aptitude test candidates and students preparing for JAMB, WAEC, NECO or Post UTME.
If 85% of x is N3230, what is the value of x?
N2745.50
N3714.50
N3800.00
N4845.00
Correct answer is C
85% of x = 3230
\(\frac{85}{100} \times x\) = N3230
x = \(\frac{100}{85}\) x N3230
x = N3800.00
If 92x = \(\frac{1}{3}\)(27x), find x
2
1
-1
-2
Correct answer is C
92x = \(\frac{1}{3}\)(27x)
(22)2x = \(\frac{(3^{3x})}{3}\)
(34x) = 33x - 1
4x = 3x - 1
4x - 3x = -1
x = -1
Express 2.7864 x 10-3 to 2 significant figures
0.28
0.27
0.0028
0.0027
Correct answer is C
2.7864 x 10-3 = 0.0027864
= 0.0028(approx. 2 s.f)
What is the median of the following scores: 22 35 41 63 74 82
82
52
49
22
Correct answer is B
22 35 41 63 74 82
Median = \(\frac{41 + 63}{2} = \frac{104}{2}\)
= 52
40
45
55
60
Correct answer is B
\(\frac{x + 50 + 70}{3} = 55\)
x + 120 = 3(55)
x + 120 = 165
= 165 - 120
x = 45%