Question 277659
In renting an apartment with two other friends.  Mike agreed to pay $100 security depost by himself.  The 3 of them agreed to contribute equally toward the monthly rent.  Mike's first check to the apt owner was for $425.  What was the monthly rent for the apt?

Let the monthly rent be x

each has to pay x/3 per month

Mike paid the deposit of $100

So he has to give a check of x/3 +100 which was 425

x/3 + 100 = 425

x/3 = 425-100

x/3 = 325

x= 975  rent for the month