Three gardeners 90 minutes take to weed a garden. If the job has to be done in only 15 minutes,
how many gardeners are required? If there are 10 gardeners, then how much time do they take
to weed the same garden?
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Step-by-step explanation:
each gardener takes 3*90 = 270 minutes to do the job alone.
So, since 15 = 270/18
It will take a total of 18 gardeners.
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