240 houses 25% are 2 bed affordable housing, the remander must be 3 4 bedroomed to 4 3 bedroomed, how many 3 bed houses? How many 4 bed houses?

Question

How do you work this out??

Answer 1

25% of 240 = 0.25(240) = 60 of the 2 br affordable houses.

240 - 60 = 180 left

 

We have a ratio of 3 of the 4 br houses to 4 of the 3 br houses

 

3x + 4x = 180

7x = 180

x = 25.714

 

3x = 77.1 so we will round to 77 of the 4 br houses

leaving 103 of the 3 br houses