Answer:
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Hii, do you need to know the answer to your question? No problem! (:
A number increased by...
Let's think about it for a moment. If we increase a number by some other number, we increase its value.
If we increase a number's value, we add something to it.
So "a number increased by one third" is the same as
.
Voila! There's our solution, cheers! (:
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Hope that this helped! Best wishes.