A survey of top executive revealed that 35% of them regularly read Time Magazine, 20% read Newsweek and 40% read U.S. News & World Report. Fifteen percent read both Time and U.S. News & world Report. What is the probability that a particular top executive reads either Time or U.S. News & world Report regularly?

Question

anonymous · Answer

Didn't read full question xD It's 65%..... 40% + 35% - 10% because they read both but it's only asking who reads only ONE of them.

anonymous · Answer

why -10

anonymous · Answer

I'm sorry -.- (It's 3:22 here and apparently i don't feel tired but my brain does)

I'll go slow. 35% (Time Magazine) + 40% (Us and Newsweek) - 15% (Read both)

the 15% is already factored into the 35 and 40% so therefore, if you added them it would be like adding each reader twice. But it's accounted for in the statistic so therefore you have to put it somewhere... so you subtract it. (i'm so sorry if my explaining skills are a little slow right now).