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

Question

Amira

Mathematics

19 May, 20:37

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

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Ben Cruz · Answer 1

Let "x" be the amount of share for rental of the apartment per month. There were three of them who live in the apartment, it means all expenses and rentals shall be divided equally by three.

First-month rental = Last month rental

Individual contribution shall be calculated this way:

Individual contribution = First rental + second rental + security deposit / 3

$1000 = x + x + $1200 / 3

$1000 * 3 = 2x + $1200

$3000 - $1200 = 2x

x = 1800 / 2

x = 900

The share per rent is $900 which is letter "D".