Jamb Mathematics 2015 Past Questions and Answers

Question 76:

• JAMB 2015

A man with an annual salary of N2000, has allowances of N600. If Income Tax is 5%. How much tax does he pay each year?

A. 15
B. 20
C. 30
D. 25

Question 77:

• JAMB 2015

Solve the equation \( 3x^2 − 4x − 5 = 0 \)

A. X = 1.75 or − 0.15
B. X = 2.12 or − 0.79
C. X = 1.5 or − 0.34
D. X = 2.35 or −1.23

Question 78:

• JAMB 2015

The first and last term of a linear sequence (AP) are 6 and 10 respectively. If the sum of the sequence is 40. Find the number of terms

A. Nth = 3
B. Nth = 4
C. Nth = 5
D. Nth = 6

Question 79:

• JAMB 2015

Find the equation of a line which is form origin and passes through the point (−3, −4)

A. Y = \( \frac{3x}{4} \)
B. Y = \( \frac{4x}{3} \)
C. Y = \( \frac{2x}{3} \)
D. Y = \( \frac{x}{2} \)

Question 80:

• JAMB 2015

The amount A to which a principal P amounts at r% compound interest for n years is given by the formula A = P(1 + (r ÷ 100)\(^n\). Find A, if P = 126, r = 4 and n = 2.

A. N132.50K
B. N136.30K
C. N125.40K
D. N257.42K