BECE Mathematics 2019 Paper

Concept:A fraction compares a part to the whole. Here, the part is the number of boys and the whole is the total number of students in the class.Explanation:Total number of students in the class is $12 + 18 = 30$.The fraction of boys is found by dividing the number of boys by the total number of students.Thus, fraction of boys $= \frac{12}{30}$.Simplify the fraction by dividing the numerator and denominator by their HCF, which is $6$.$\frac{12}{30} = \frac{12 \div 6}{30 \div 6} = \frac{2}{5}$.So, boys form 2 parts out of every 5 students in the class.Answer:The fraction of boys in the class is $\frac{2}{5}$, which is Option A.