Mathematics 1990 Jamb Past Questions and Answers

Question 21 :

• JAMB 1990

The perimeter of a rectangular lawn is 24m. If the area of the lawn is 35m²; how wide is the lawn?

A. 5cm
B. 7m
C. 12m
D. 14m

Question 22 :

• JAMB 1990

A car painter charges N40.00 per day for himself and N10.00 per day for his assistant. if a fleet of cars were painted for N2000.00 and the painter worked 10days more than his assistant, how much did the assistant receive?

A. N32.00
B. N320.00
C. N420.00
D. N1680.00

Question 23 :

• JAMB 1990

Simplify \(\frac{x}{x + y}\) + \(\frac{y}{x - y}\) - \(\frac{x^2}{x^2 - y^2}\)

A. \(\frac{x}{x^2 - y^2}\)
B. \(\frac{y^2}{x^2 - y^2}\)
C. \(\frac{x^2}{x^2 - y^2}\)
D. \(\frac{y}{x^2 - y^2}\)

Question 24 :

• JAMB 1990

Given that x² + y² + z² = 194, calculate z if x = 7 and \(\sqrt{y}\) = 3

A. \(\sqrt{10}\)
B. 8
C. 12.2
D. 13.4

Question 25 :

• JAMB 1990

Find the sum of the first twenty terms of the progression log a, log a², log a³.....

A. Log a²⁰
B. Log a²¹
C. Log a²⁰⁰
D. Log a²¹⁰