JAMB - Mathematics (1981 - No. 37)
A baking recipe calls for 2.5kg of sugar and 4.5kg of flour. With this recipe some cakes were baked using 24.5kg of a mixture of sugar and flour. How much sugar was used?
12.25kg
6.75kg
8.75kg
15.75kg
8.25kg
Explanation
Sugar : flour = 2.5 : 4.5
Total = 7
sugar used = \(\frac{2.5}{7}\) x 24.5
= \(\frac{61.25}{7}\)
= 8.75
Total = 7
sugar used = \(\frac{2.5}{7}\) x 24.5
= \(\frac{61.25}{7}\)
= 8.75
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