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lidiya [134]
3 years ago
8

An apartment building contains 12 units consisting ot one and two bedroom apartments that rent for $360 and $450 per month, resp

ectively. When all the units are rented the total monthly rental is $4,950. What is the number of two bedroom apartments?
Mathematics
2 answers:
atroni [7]3 years ago
8 0
Total monthly rental is <span>$4,950</span>. ... Thus, total rental for one bed apartments is x*360 (=360x)
stepladder [879]3 years ago
4 0

Answer:

  • the number of 1 bed-room apartment: 5
  • the number of 2 bed-room apartment: 7

Step-by-step explanation:

  • Let x is the number of 1 bed-room apartment
  • Let y is the number of 2 bed-room apartment

Given the information:

  • The total number of  apartments: 12
  • rent for one bedroom apartment: $360
  • rent for two bedroom apartment: $450
  • total monthly rental is $4,950

Hence, we can form two equations:

x + y =12 <=> x = 12-y (1)

360x + 450y = 4950 (2)

Let substitute (1) into (2), we have:

360(12-y) + 450y = 4950

<=> 4320 - 360y + 450y = 4950

<=> 90y = 630

<=> y = 7

=> x = 12-7 = 5

So, we have:

  • the number of 1 bed-room apartment: 5
  • the number of 2 bed-room apartment: 7

Hope it will find you well

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