Jamb Mathematics 2015 Past Questions and Answers

Question 61:

• JAMB 2015

If duty is levied at 25%, find the duty to be added to a bill of N80.

A. N100
B. N20
C. N80
D. N150

Question 62:

• JAMB 2015

Simplify 2.04 x 3.7 (Leave your answer in 2 decimal place)

A. 7.51
B. 7.71
C. 5.5
D. 7.55

Question 63:

• JAMB 2015

A public car dealer marked up the cost of a car at 30% in an attempt to make 20% gross profit. Due to the value of dollar, he now placed 20% discount on the car. What profit or loss will he make?

A. 3%
B. 2%
C. 4%
D. 1%

Question 64:

• JAMB 2015

Rationalize 5 ÷ (2 − √3)

A. 3(2 + √5)
B. 2(3 + √5)
C. 5(2 + √3)
D. 3 √2 + 1

Question 65:

• JAMB 2015

Factorize \( a^2 − b^2 − 4a + 4 \)

A. (a + b)(a − b)
B. (a − 2 + b)
C. (a + 1)(a − 2 + b)
D. (a + b) 2