Answer to Question #129885 in Algebra for Tozama

Question

Ntsako walks to school each day at a constant pace of 75 m per minute.

The school is 1.8 km from his house.

1.2.1.1. Use a sketch or diagram to represent the problem. (2)

1.2.1.2. Solve the problem (3)

1.3. Use the concept of ratio to answer the following questions.

1.3.1. In week 1, Mpho deep cleans a paving at 4 m2 per hour. How long will it take her to deep clean

an area of 12 m long and 6 m wide? (3)

1.3.2. In week 2, Maria joins and each of them cleans 4 m2 per hour. How long will it take the two of

them to deep clean an area of 12 m long and 6m wide? (4)

1.3.3. In week 3, Lerato joins and each of them cleans 4 m2 per hour. How long will it take the three of

them to deep clean an area of 12 m long and 6 m wide? (4)

1.4. Calculate the following:

1.4.1. Which is the best price for washing powder? Motivate your answer.

 R45 for 2.5 kg

 R55.50 for 3 kg

 R72 for 4 kg (3)

Answer 1

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