She able to serve maximum 18 people.
What do you mean by maximum?
The word maximum is used to express an amount that is the greatest that is conceivable, permitted, or necessary.
According to data in the given question,
We have data in the given question:
The apple crumble of 600gm apple to serve = 6 people
Let x represents the max number of people which takes apple crumble of 1800gm apple.
6 people .......... 600g apple
X people .......... 1800g of apples
600X = 1800*6 / :600
X = 18
Therefore, she able to serve maximum 18 people.
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