Jamb Mathematics 1987 Past Questions and Answers

Question 6:

• JAMB 1987

A train moves from P to Q at an average speed of 90km/h and immediately returns from Q to P through the same route at an average speed of 45km/h. Find the average speed for the entire journey

A. 55.00km/h
B. 60.00km/h
C. 67.50km\h
D. 75.00km\h

Question 7:

• JAMB 1987

If the length of a square is increased by 20% while while its width is decreased by 20% to form a rectangle, what is the ratio of the area of the rectangle to the area of the square?

A. 6 : 5
B. 25 : 24
C. 5 : 6
D. 24 : 25

Question 8:

• JAMB 1987

Two brothers invested a total of N5,000.00 on a farm project, the farm yield was sold for N 15,000.00 at the end of the season. If the profit was shared in the ratio 2 : 3, what is the difference in the amount to profit received by the brothers?

A. N2,000.00
B. N4,000.00
C. N6,000.00
D. N10,000.00

Question 9:

• JAMB 1987

A man invests a sum of money at 4% per annum simple invest. After 3 years, the principal amounts to N7,000.00. Find the sum invested

A. N7,840
B. N6,250.00
C. N616.00
D. N5,833.33

Question 10:

• JAMB 1987

By selling 20 oranges for N1.35 a trader makes a profit of 8%. What is his percentage gain or loss if he sells the same 20 oranges for N1.10?

A. 8%
B. 10%
C. 12%
D. 15%