Percentages, SM-Bank 013

Find:

2% of $14.50. (2 mark)

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15% of 300 kg. (2 marks)

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\(12\dfrac{1}{2}\%\) of 880 km. (2 marks)

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Show Answers Only

a. \($0.29\)

b. \(45\ \text{kg}\)

c. \(110\ \text{km}\)

Show Worked Solution

a. \(1\%\ \text{of}\ $14.50\)	\(=$0.145\)
\(\therefore\ 2\%\ \text{of}\ $14.50\)	\(=2\times $0.145=$0.29\)

b. \(15\%\ \text{of}\ 300\text{ kg}\)
\(10\text{% of }\ 300\ \text{kg}\)	\(=30\ \text{kg}\)
\(\therefore\ 5\text{% of }\ 300\ \text{kg}\)	\(=15\ \text{kg}\)
\(\therefore\ 15\text{% of }\ 300\ \text{kg}\)	\(=30+15=45\ \text{kg}\)

c. \(12\dfrac{1}{2}\text{% of}\ 880\ \text{km}\)
\(25\text{% of}\ 880\ \text{km}\)	\(=220\ \text{km}\)
\(\therefore\ 12\dfrac{1}{2}\text{% of}\ 880\ \text{km}\)	\(=110\ \text{km}\)