Answer :
Based on the various costs incurred by the three roommates, the monthly cost of the apartment is $1,410.
What is the most cost of the apartment?
The monthly cost of the apartment are all costs that relate to maintaining it and providing services to it.
This can be found as:
= Monthly rent + Monthly utilities + Internet service + cleaning fees
= 1,050 + 150 + 120 + 90
= $1,410
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