A building has a total of 60 one-bedroom and two-bedroom apartments. there are twice as many one-bedroom apartments as two-bedroom apartments. how many apartments of each type are in the building? Use a system of linear equations to justify your answer.

Question

Katelyn Farrell

Mathematics

7 July, 04:44

A building has a total of 60 one-bedroom and two-bedroom apartments. there are twice as many one-bedroom apartments as two-bedroom apartments. how many apartments of each type are in the building? Use a system of linear equations to justify your answer.

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Answers (1)

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Felipe Robinson · Answer 1

Let the number of one-bedroom apartments be x, and the number of two-bedroom apartments be y.

If there are a total of 60, then x + y = 60.

If there are twice as many 1-bedroom apartments as there are 2-bedroom ones, then x = 2y.

Substitute x = 2y into the first equation to get 2y + y = 60, or y = 20.

Substitute y = 20 into the second equation to get x = 40.

Therefore, there are 40 one-bedroom apartments and 20 two-bedroom apartments in the building.