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2015-03-30T22:57:51+08:00

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Each juice bottle serves 10 people. Why does Emma need 4 bottles of juice to serve 35 drinks?

1 juice bottle = 10 people

So, it'll be like this:

1 juice bottle = 10 people

1 juice bottle + 1 juice bottle = 10 people + 10 people
2 juice bottles = 20 people

2 juice bottles + 1 juice bottle = 20 people + 10 people
3 juice bottles = 30 people

We need to serve 35 drinks, right? If we're just going to order or get 3 juice bottles, there are only 30 people who'll get their drinks. Thus, 5 people will not get their own drinks.

3 juice bottles = 30 people
3 juice bottles + 1 juice bottle = 30 people + 10 people

4 juice bottles = 40 people

If we're going to get 4 juice bottles, there are 40 people who'll get their drink. We need 35 drinks so if we're going to get 4 juice bottles, then all people would get a drink (40 drinks) but there are 5 extra. We wouldn't mind on the extra because the important thing about this is all of the people owning or getting their own drink.

So yeah.

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