Mathematics Past Questions and Answers

After getting a rise of 15%, a man's new monthly salary is N345. How much per month did he earn before the increase?

A N330
B N396.75
C N300
D N293.25
E N360

Question 7:

In base ten, the number 101101 (base 2) equals

A 15
B 4
C 45
D 32
E 90

Question 8:

The annul profits of a transport business were divided between the partners A and B in the ratio 3 : 5. If B received N3000 more than A, the total profit was

A N5000
B N1800
C N12000
D N24000
E N8000

Question 9:

x is directly proportional to y and inversely proportional to z. If x = 9 when y = 24 and z = 8, what is the value of x when y = 5 and z = 6?

A \(\frac{5}{6}\)
B 11
C 3\(\frac{3}{5}\)
D 2\(\frac{1}{2}\)
E 1\(\frac{1}{5}\)

Question 10:

The solution of the equation x² - 2x = 8 is

A X = 0 or 2
B X = -2 or 4
C X = 2
D X = -4
E X = 2 or 4