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.
2\(\frac{4}{5}\)%
16\(\frac{7}{8}\)%
18\(\frac{1}{8}\)%
18\(\frac{7}{8}\)%
Correct answer is B
% of water in the mixture
= \(\frac{\text{Total Amount of water}}{\text{Total quantity of spirit}}\) x \(\frac{100}{1}\)
\(\frac{3(\frac{20}{100}) + 5 (\frac{15}{100})}{3 + 5}\) x \(\frac{100}{1}\)
= \(\frac{\frac{6}{10} + \frac{75}{100}}{8}\) x \(\frac{100}{1}\)
= \(\frac{0.6 + 0.75}{8}\) x \(\frac{100}{1}\)
= \(\frac{1.35}{8}\) x \(\frac{100}{1}\)
= \(\frac{33.75}{2}\)
= 16.875
= 16\(\frac{7}{8}\)
N10.80
N10.67
N2.80
N2.67
Correct answer is C
I = \(\frac{PRT}{100}\)
= \(\frac{10 \times 2 \times 4}{100}\)
= \(\frac{4}{5}\)
= 0.8
Total amount = N10.80
He pays N8.00
Remainder = 10.80 - 8.00
= N2.80
250
750
1000
1250
Correct answer is A
P produces 20,000 bags
P reduces production by 5%
i.e. reduction = \(\frac{5}{100}\) x \(\frac{20000}{1}\)
= 1000
Q produces 15000 bags
Q increases production by 5%
i.e. increase = \(\frac{5}{100}\) x \(\frac{15000}{1}\)
= 750
Effective loss by the two = 1000 - 750
= 250 bags
express 62 \(\div\) 3 as a decimal correct to 3 significant figures
20.6
20.667
20.67
20.7
Correct answer is D
\(\frac{62}{3}\) = 20.6666.....
= 20.7 to 3 sig. fig.
Find correct to 3 decimal places (\(\frac{1}{0.05}\) + \(\frac{1}{5.005}\)) - (0.05 x 2.05)
99.998
98.999
89.899
9.998
Correct answer is A
(\(\frac{1}{0.05}\) + \(\frac{1}{5.005}\)) - (0.05 x 2.05)
(\(\frac{1}{0.05}\) x 5.005) - (0.05 x 2.05)
\(\frac{5.005}{0.05}\) - 0.1025
100.1 - 0.1025
= 99.9975
99.998 to 3 decimal place.