BECE Mathematics 2021 Paper

Concept:Simple interest is the extra money earned on the original principal.When the rate is given per annum, time must be expressed in years.Explanation:Convert the time from months to years.Since there are $12$ months in a year, $8$ months $= \frac{8}{12} = \frac{2}{3}$ year.Here, Principal $P = 600$, Rate $R = 5\%$, Time $T = \frac{2}{3}$ year.Use the simple interest formula: $\text{SI} = \frac{P \times R \times T}{100}$.Substitute the values: $\text{SI} = \frac{600 \times 5 \times \frac{2}{3}}{100}$.Simplify the numerator: $600 \times 5 = 3000$, and $3000 \times \frac{2}{3} = 2000$.Therefore, $\text{SI} = \frac{2000}{100} = 20$.So the simple interest is GH₵ 20.00.Answer:A. GH₵ 20.00