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

Question 6 :

• JAMB 2019

\(\frac{\frac{2}{3} \div \frac{4}{5}}{\frac{1}{4} + \frac{3}{5} - \frac{1}{3}}\)

A. \(\frac{31}{50}\)
B. \(\frac{20}{31}\)
C. \(\frac{31}{20}\)
D. \(\frac{50}{31}\)

Question 7 :

• JAMB 2019

Tade bought 200 mangoes at 4 for 30 out of the mangoes got spoilt and the remaining were sold at 2 for Find the percentage profit or loss.

A. 43.6% loss
B. 35% profit
C. 63.2% profit
D. 28% loss

Question 8 :

• 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 9 :

• 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 10 :

• JAMB 2019

The weight of a day-old chick was measured to be 0.21g. If the actual weight of the chick is 0.18g, what was the percentage error in the measurement?

A. 15.5%
B. 18.2%
C. 14.8%
D. 16.7%