Sets

[aa2kash]

50% of the aparments in a certain building have windows and hardwood floors. 25% of the apartments without windows have hardwood floors. If 40% of the apartments do not have hardwood floors, what percent of the apartments with windows have hardwood floors?

A. 10
B. 16 2/3
C. 40
D. 50
E. 83 1/3

Please suggest me a quick way to tackle such problems.
OA is E

[caspermonday]

Hey, the best way, in my opinion was suggested by MGMAT (they propose to fill out a simple matrix, you should see it in their Word transalations). Refer there. You will save loads of time at your exam.

[mehravikas]

Can you draw a table please?

Hey, the best way, in my opinion was suggested by MGMAT (they propose to fill out a simple matrix, you should see it in their Word transalations). Refer there. You will save loads of time at your exam.

[ayushr]

mehravikas - i have attached the table .. hope it helps ..

[caspermonday]

Can you draw a table please?

Sorry, I got late to answer. I found another link where I explained in details how to use this matrix, see: https://gmatclub.com/forum/probability-b ... ml#p622413