waecmaths question:
A baker used 40% of a 50kg of flour. If $\tfrac{1}{8}$ of the amount used was for cake, how many kilogram of flour was used for the cake?
Option A:
2½
Option B:
6 ¼
Option C:
$15\tfrac{3}{8}$
Option D:
17½
waecmaths solution:
40% of the 50kg will be $\frac{40}{100}\times 50=20kg$
Out of the 20kg, the baker used one-eightieth for cake will be $\frac{1}{8}\times 20kg=2\frac{1}{2}kg$
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