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Answer: 9 hours.
4 gardeners 4 flower beds
4 hours
4 gardeners 4 flower beds
6 hours ($\times \frac64$)
4 gardeners 4 flower beds
9 hours ($\times \frac64$)
6 gardeners 6 flower beds 9 hours ($\times \frac 64$ for more flower beds
and $\div\frac64$ for more gardeners)
Flower Show
Age 14 to 16
ShortChallenge Level 
Answer: 9 hours.
4 gardeners 4 flower beds
4 hours4 gardeners 4 flower beds
6 hours ($\times \frac64$)4 gardeners 4 flower beds
9 hours ($\times \frac64$)6 gardeners 6 flower beds
9 hours ($\times \frac 64$ for more flower bedsand $\div\frac64$ for more gardeners)
This problem is taken from the UKMT Mathematical Challenges.
You can find more short problems, arranged by curriculum topic, in our short problems collection.
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