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, Question 1
A biscuit manufacturer uses 200 g of flour, 50 g of sugar and 100 g of butter for each packet of
biscuits produced. Write an expression for the amount of butter needed to produce 𝑥 packets of
biscuits.
(1) 100𝑥 kg
(2) 0,01𝑥 kg
(3) 0,1𝑥 kg
𝑥
(4) kg
0,01
Solution:
100 gram = 0.1 kilogram
0,1𝑥 kg
Question 2
Simplify the following expression as far as possible:
2𝑏 2 (𝑎 − 1) − 8𝑎(𝑏 2 + 1)
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