Martha exprime 5 naranjas para hacer jugo. si ya tiene 3/5 litros de jugo, ? cuanto le falta para llenar un recipiente que tiene 9/10 de capacidad?

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 how many litters are needed to reach the litters capacity of the container. This can be mathematically expressed as follows:

Let’s find X:

This means that Martha needs to reach the capacity.

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.

answer: all of the odd numbers were opened

the first person was the one that was opening all of the lockers. since one is odd, this causes all of the odd number lockers to be opened in the end.