Waec Mathematics 2009 Past Questions and Answers

Question 16:

• WAEC 2009

In an examination, Kofi scored x% in Physics, 50% in Chemistry and 70% in Biology. If his mean score for the three subjects was 55%, find x

A. 40
B. 45
C. 55
D. 60

Question 17:

• WAEC 2009

What is the median of the following scores: 22 35 41 63 74 82

A. 82
B. 52
C. 49
D. 22

Question 18:

• WAEC 2009

Express 2.7864 x 10^-3 to 2 significant figures

A. 0.28
B. 0.27
C. 0.0028
D. 0.0027

Question 19:

• WAEC 2009

If 9^2x = \(\frac{1}{3}\)(27^x), find x

A. 2
B. 1
C. -1
D. -2

Question 20:

• WAEC 2009

If 85% of x is N3230, what is the value of x?

A. N2745.50
B. N3714.50
C. N3800.00
D. N4845.00