Question

Mathematical Literacy/Term 2 Assignment 6 NSC Grade 12 RTB/MAY 2023 QUESTION 4 Ms Lerato bakes rusks and sells them in 500 g packs, at R55,00 per pack. Table 3 shows the main ingredients of the rusks. TABLE 3: MAIN INGREDIENTS TO BAKE 800 g OF RUSKS 2 500 g Self-raising flour 10 cups Bran flour 200 g Raisins 1 000 g Butter Use the information above to answer the questions that follow. 4.1 Convert the mass of the self-raising flour to kg. 4.2 Determine the number of cups of bran flour needed to bake 400 g of rusks. 4.3 Write, in simplified form, the ratio of raisins to butter. 4.4 The rusks were placed in the oven to bake at 14:40. Write down, in words, the time the rusks were placed in the oven. (2) (2) (2) (2) [8]​

Answer 1

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4.1 To convert the mass of the self-raising flour to kg, we can divide the mass by 1000, since there are 1000 grams in a kilogram:

2 500 g ÷ 1000 = 2.5 kg

So the mass of the self-raising flour is 2.5 kg.

4.2 To determine the number of cups of bran flour needed to bake 400 g of rusks, we can use a proportion:

800 g of rusks requires 10 cups of bran flour

400 g of rusks requires x cups of bran flour

We can set up the proportion as:

800 g ÷ 10 cups = 400 g ÷ x cups

Cross-multiplying, we get:

800 g x cups = 10 cups x 400 g

Simplifying, we get:

x = 5 cups

So 5 cups of bran flour are needed to bake 400 g of rusks.

4.3 To write the ratio of raisins to butter in simplified form, we can divide both quantities by their greatest common factor. The greatest common factor of 200 g and 1 000 g is 200 g, so we can divide both by 200 g:

200 g ÷ 200 g = 1

1 000 g ÷ 200 g = 5

So the simplified ratio of raisins to butter is 1:5.

4.4 The rusks were placed in the oven to bake at 14:40. In words, this time is "twenty to three in the afternoon" (assuming that the time is given in a 12-hour clock format).