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in a block of flats there are 24 units of 3 types: the luxury unit, the superior unit and deluxe unit. 
The luxury can accommodate 8 people, the superior unit can accommodate 7 people and deluxe can accommodate 5 people. 
Given that the total number of people living in this block is 160, how many of each type are there?

 May 5, 2021
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8/5 D+  7/5 D  +  5 D   = 160 

20/5 D = 160 

 

D = 40   People        D= 8 units 

 

then    8/5 D =  64 people  = 8 units of Luxury 

 

7/5 D = 56 people    =   8 units of Superior     

 May 5, 2021

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