The cost of ten pack of stylus pen is $(50/3).
This problem can be solved by unitary method and can be understood by the following process.
In this method we have to determine the cost of a unit of product and then the total amount by multiplying the unit cost by the desired quantity what we want.
Here, it is given that three packs of stylus pen costs $5.
Cost of one pack of stylus pen = $ 5/3
Therefore cost of 10 packs of stylus pen = $(5/3)*10
= $(50/3)
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