Granny and her granddaughter Gill both had their birthday yesterday. Today, Granny's age in years is an even number and 15 times that of Gill. In 4 years' time Granny's age in years will be the square of Gill's age in years.
How many years older than Gill is Granny today?
Select one option, then click Submit.
42
49
56
60
64
Select an option, then submit.
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Senior Mathematical Challenge 2011 (2011)
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