Waec Mathematics 1998 Past Questions and Answers

Question 21:

• WAEC 1998

solve the inequality \((Y-3)<\frac{y}{3}\)

A. Y > -9
B. Y < 3
C. Y > 4
D. Y < 9
E. Y > 0

Question 22:

• WAEC 1998

If h(m+n) = m(h+r) find h in terms of m, n and r

A. \(h=\frac{mr}{2m+n}\)
B. \(h=\frac{mr}{n+m}\)
C. \(h=\frac{m+n}{n}\)
D. \(h=\frac{m+n}{m}\)
E. \(h=\frac{mr}{n}\)

Question 23:

• WAEC 1998

Given that \(\frac{6x-y}{x+2y}=2\), find the value of \(\frac{x}{y}\)

A. \(\frac{3}{8}\)
B. \(\frac{5}{8}\)
C. \(\frac{4}{5}\)
D. \(\frac{5}{4}\)
E. \(\frac{8}{5}\)

Question 24:

• WAEC 1998

The radius of a geographical globe is 60cm. Find the length of the parallel of latitude 60^oN

A. \(66\pi cm\)
B. \(60\pi cm\)
C. \(30\pi cm\)
D. \(15\pi cm\)
E. \(6\pi cm\)

Question 25:

• WAEC 1998

In the diagram above, O is the center if the two concentric circle of radii 13cm and 10cm respectively. Find the area of the shaded portion in the sector with angle 120⁰ at the center

A. \(\frac{1}{3}\pi cm^2\)
B. \(\pi cm^2\)
C. \(3\pi cm^2\)
D. \(23\pi cm^2\)
E. \(46\pi cm^2\)