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Martha squeezes 5 oranges to make juice. If she already has 3/5 liters of juice, how many times does she need to fill a container that has 9/10 capacity?
According to the problem, with 5 oranges Martha has litters of orange juice.
First we have to find <u>how many litters are needed to reach the litters capacity of the container</u>. This can be mathematically expressed as follows:
Let’s find X:
This means that <u>Martha needs to reach the
capacity</u>.
Now, if 5 oranges represent , how many oranges represent
?
This can be solved by “the rule of three” also called cross-multiplication:
5 oranges--------
N oranges--------
This is equivalent to
This means Martha needs 2.5 oranges or to to fill a container that has 9/10 capacity.