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

Question 51 :

• JAMB 2015

The extension of a stretched string is directly proportional to its tension. If the extension produced by a tension of 8 Newton’s is 2cm, find the extension produced by a tension of 12 newton’s.

A. 2
B. 1
D. 3

Question 52 :

• JAMB 2015

Find the simple interest on N325 in 5years at 3% per annum.

A. N48.75K
B. N50.10K
C. N75.50K
D. N15.75K

Question 53 :

• JAMB 2015

Simplify (0.09)² and give your answer correct to 4 significant figures

A. 0.81
B. 0.081
C. 0.0081
D. 8.0001

Question 54 :

• JAMB 2015

A man sells his new brand car for N420,000 at a gain of 15%. What did it cost him?

A. N410,000
B. N365, 217
C. N157, 250
D. N257,000

Question 55 :

• JAMB 2015

A pipe made of metal 10cm thick has an external radius of 11cm. find the area of metal in making 2.4cm of pipe

A. 24πcm²
B. 21πcm²
C. 15πcm²
D. 17πcm²