Question 46:

• JAMB 2019

The simple interest on #8550 for 3 years at x% per annum is #4890. Calculate the value of x to the nearest whole number.

A. 19%
B. 20%
C. 25%
D. 16.3%

Question 47:

• JAMB 2019

Simplify 81\(^{\frac{-3}{4}}\) x 25\(^{\frac{1}{2}}\) x 243\(^{\frac{2}{5}}\)

A. \(\frac{2}{5}\)
B. \(\frac{3}{5}\)
C. \(\frac{5}{2}\)
D. \(\frac{5}{3}\)

Question 48:

• JAMB 2019

Find the value of \(\frac{(0.5436)^3}{0.017 \times 0.219}\) to 3 significant figures.

A. 46.2
B. 43.1
C. 534
D. 431

Question 49:

• JAMB 2019

If S = (4t + 3)(t - 2), find ds/dt when t = 5 secs.

A. 50 units per sec
B. 35 units per sec
C. 22 units per sec
D. 13 units per sec

Question 50:

• JAMB 2019

The angles of a polygon are given by 2x, 5x, x and 4x respectively. The value of x is

A. 31°
B. 30°
C. 26°
D. 48°