Fractions Decimals Approximations And Percentages - Mathematics Jamb Past Questions and Answers

Question 26 :

• JAMB 2018

If the simple interest on a sum of money invested at 3% per annum for 2\(\frac{1}{2}\) years is N123, find the principal.

A. N676.50
B. N820
C. N1,640
D. N4,920

Question 27 :

• JAMB 2018

A machine valued at N20,000 depreciates by 10% every year. What will be the value of the machine at the end of two years?

A. N16,200
B. N14,200
C. N12,000
D. N8,000

Question 28 :

• JAMB 2017

Evaluate 1 − (\(\frac{1}{5}\) x 1\(\frac{2}{3}\)) + (5 + 1\(\frac{2}{3}\))

A. 4
B. 3
C. \(\frac{22}{3}\)
D. 3 \(\frac{2}{3}\)

Question 29 :

• JAMB 2017

If a rod 10cm in length was measured as 10.5cm, calculate the percentage error

A. 5%
B. 10%
C. 8%
D. 7%

Question 30 :

• JAMB 2017

Find the principal which amounts to ₦ 5,500 at a simple interest in 5 years at 2% per annum

A. N 4,900
B. N 5,000
C. N 4,700
D. N 4,000