JAMB Mathematics 2018 Paper

Concept:To find the remaining fraction of pocket money, subtract the total fraction spent from the whole.Explanation:Let the girl's total pocket money be represented as $1$.Fraction spent on books $= \frac{1}{4}$.Fraction spent on dress $= \frac{1}{3}$.Total fraction spent $= \frac{1}{4} + \frac{1}{3}$.Use a common denominator of $12$: $\frac{3}{12} + \frac{4}{12} = \frac{7}{12}$.Therefore, the fraction remaining $= 1 - \frac{7}{12} = \frac{5}{12}$.Answer:The fraction that remains is $\frac{5}{12}$, which is option C.