shahmughal wrote:A building has 60 apartments, out of which 2/5 have 1 bedroom and rest have 2 or 3 bedrooms.If there are 90 rooms in the building then how many 3 bedrooms in the building.
2/5 have 1 bedroom
2/5 of 60 = 24
So, 24 apartments have 1 bedroom.
This means the remaining 36 apartments have either 2 bedrooms or 3 bedrooms.
Then how many 3 bedrooms in the building?
All we know at this point is that 36 apartments have either 2 bedrooms or 3 bedrooms.
So, our answer is between 0 and 36
The answer choices that you provided don't make any sense since none of them are integers.
a. 2/3
b. 5/3
c. 7/14
d. 17/3
e. 19/2
You might want to go back and re-read the question.
By the way, what is the source of this question?
Cheers,
Brent
