Chapter 1 Exercises1.15 Evaluate:(a) 16÷5 6(b) 2÷ 14(c) 12×1 3÷1 61.17 | Express as fractions (in simplest terms):(a) 0.50 | (b) 0.075 | (c) 0.1251.55 | One small radiator can heat a room of 20 m3, while one large radiator can heat a room of 30 m3.How many cubic metres can be heated by a combination of:(a) 3 small and 2 large radiators?(b) 5 small and 6 large radiators?(c) 10 small and
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Chapter 1 Exercises
1.15 Evaluate:
(a) 1
6
÷
5 6
(b) 2÷ 1
4
(c) 1
2
×
1 3
÷
1 6
1.17 | Express as fractions (in simplest terms):
(a) 0.50 | (b) 0.075 | (c) 0.125
1.55 | One small radiator can heat a room of 20 m3, while one large radiator can heat a room of 30 m3.
How many cubic metres can be heated by a combination of:(a) 3 small and 2 large radiators?
(b) 5 small and 6 large radiators?
(c) 10 small and 12 large radiators?
1.75 | Bob can eat two-thirds of a pizza in 12 minutes. If he eats at the same rate, how long will it take
him to eat 1.5 pizzas?Chapter 2 Exercises
2.15 | A store is selling jars of jam for $1.70 each, which it claims represents a discount of 331
3
%. What
is the usual list price of the jams?
An electronics store marks up its voice activated tape recorders by 40% over the cost price from
the supplier.
2.20 (a) If the store pays the supplier $65 for such a recorder, for what price will it retail (inc GST)?
(b) If the store sells a recorder for $107.80 (inc GST), what was the cost price from the supplier?
2.55 | A broker charges customers a fixed fee of $90 plus 2.5% of the amount of all investments made.
Find the total brokerage payable if the client invests through the broker an amount of:
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