Page 163 - MATHEMATICS COURSE FOR SECONDARY SCHOOLS BOOK 2

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Lawrence expenditure in Decesmber increased in the ratio 9;4. As a result he spent $475 more. What was Lawrence’s expenditure in November?
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3 These are 4 boys to every 7 girls in a class of 33 students. How many girls are in the
REVISION EXERCISE 6
13 Draw a circle with radius:
(a) 3.5 cm (b) 4.2 cm (c) 5.8 cm
The distance between Towns A and B on a map is 25 cm. If the map scale is 1 cm to 50 metres, find the actual distance in km between the two towns.
The scale of a map is 1 cm to 150 m.
(a) What is the actual distance in km between two towns that are 12.5 cm apart on the map?
(b) What is the actual area of a stadium represented on the map by a rectangle 8 cm long and 5 cm wide?
A point P is 150 m from the base of a building. as shown in the sketch.
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Find the size of each marked angle, giving a reason for your answer in each case.
(a)
(c)
The monthly rental of a taxi decreased in
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the ratio 5:6. As a result $125 was saved. Whaxt was the original rent? y
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ections of a label reads ‘Mix 4 parts
of medicine with 5 parts of water.
(d)
(a) How much medicine is needed to
How much water is needed to mix with 7.5 ml of water?
Copy these angles onto a sheet of paper. Using only a ruler and compasses, bisect
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A man earns $450 a month.
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2 parts of pineapple juice to 3 parts of
each of your angles.
mango juice are mixed to make a drink.
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How much mango juice is needed
Using only a ruler and compasses,
Using a scale of 1 cm to 25 m, make a scale drawing and then find the distance of:
(a) P from the top of the flagpole T (b) B from the top of the flagpole T.
A woman’s mass increases in the ratio 5:3. As a result she gained 17 kg. What was her original mass?
The monthly rent of a market stall decreased in the ratio 5:7. As a result, the market vendor saved $36. What was the original rent?
Aileen’s expenditure in April decreased in the ratio 4:5. As a result he saved $125. What was Aileen’s expenditure in March?
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(b) How much pineapple juice is
construct each of these angles from the
needed to mix with 25 ml of mango sketches. juice?
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