This task is about using algebraic expressions to find out people's ages.
Ana is 13 and Lachlan is 11 years old. They were trying to guess their aunt's age.
Their aunt said,
| a) |
Their aunt must be more than how many years old? __________
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Their aunt then said,
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| b) |
Their aunt must be less than how many years old? __________
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| c) |
Which expression will give you Lachlan's age if Ana's age is x?
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| (A) | x + 2 | |
| (B) | x – 2 | |
| (C) | 2x | |
| (D) | x/2 |
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Finally their aunt said,
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| d) |
i)
ii)
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In how many years will this be? __________
What must their aunt's age be now? __________
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