Question

Sal and two of his friends rent an apartment together. Their total cost to move in included first month's rent, last month's rent and a security deposit of $1,200. If Sal paid a total of $1,000 to move in, how much is his share of the rent each month?
a.
$300
b.
$450
c.
$600
d.
$900

Answer 1

Let R be the monthly rent for the apartment. Move-in cost = first + last + deposit = 2R + 1200. Split three ways, Sal paid (2R + 1200)/3 = 1000. So 2R + 1200 = 3000 ⇒ 2R = 1800 ⇒ R = 900. Sal’s monthly share = 900/3 = $300.

Answer: (a) $300.