Answer:
[tex]\frac{1}{8}[/tex] of the phones in office has both a speaker phone and a conference-call capability
Step-by-step explanation:
Since total number of phones in the office is not given, the answer will be "in that terms".
let it be x
So built in speaker phones is (1/4)x
Hence conference call phones would be (1/2)(1/4x) = (1/8)x
Hence "1/8th of the phones in office has both a speaker phone and a conference-call capability"
Answer:
(1/8)x phones have both speaker phone and a conference call capability
Step-by-step explanation:
Let the total phones be x
It is given that one forth of the phones have in built speaker = (1/4)x
It is also given that one half of the phone having built in speaker also have conference call capability = (1/2) of (1/4)x
                      = (1/8)x
Therefore, (1/4)x - (1/8)x
       =  (1/8)x
(1/8)x phones have both speaker phone and a conference call capability.
