Question

Please help An apartment building contains 12 units consisting of one- amd two bedroom apartments that rent for $360 and $450 per month respectively. When All units are rented, the total monthly rental is $4,950. what is the number of two bedroom apartments?
A.3
B.4
C. 5
D. 6
E. 7

Answer 1

x+y=12 y=12-x
360x+450y=4950
360x+450(12-x)=4950

360x+5400-450x=4950
-90x=-450
x=5
Answer is C.5

Answer 2

there are 5 one bedroom apts and 7 two bedroom apts

Answer 3

so the answer is E

Answer 4

Which answer is correct? I'd like to know

Answer 5

I thought you was sure You did all the equation xD

Answer 6

the equations are correct.
it's just that @GabeBae solved for X and X = to the 1 room apts
you need to solve for Y which is equal to the 2 room apts

Answer 7

That is why it is 7 and not 5 ;)

Answer 8

Which is the x number you have to solve for?

Answer 9

"what is the number of two bedroom apartments?"

Answer 10

the two bedroom apartments are Y not X.

Answer 11

2

Answer 12

x + y = 12
360x + 450y = 4,950

x = 12 - y

360(12 - y) + 450y = 4950

-360y + 4320 + 450y = 4950
90y = 630

y = 7

Answer 13

since 2 bedroom apartments will cost more than a one bedroom we can see that y is the variable you want to solve for

Answer 14

ok thanks :)