Dear EmpowerGmatRich,
Please could you help me with this question. I already knew solution for this problem, but was confused because by the wording in the question.
My confusion arises from 1. If Adam approves, then probability of Baker approving is....
and 2. If Adam disapproves, then
Isnt it that the probabality of one event happening is dependent on another event happening. The question seemed not straight forward here and I was confused.
EMPOWERgmatRichC wrote:
Hi adityadon,
I like your approach - it has the benefit of being logical AND correct. There is a way to save a bit of work though:
Since the question asks for the probability of AT LEAST one of the VPs approving the proposal, IF Adams approves, then Baker will approve OR disapprove. The 'second part' of that calculation does not need to be separated into two possibilities -it can be done in one step.
(Adams approves) = .6
(Baker approves OR disapproves) = 1
(.6)(1) = .6
Then you just have to consider what happens if Adams DISAPPROVES....
(Adams disapproves) = .4
(Baker approves) = .3
(.4)(.3) = .12
Total probability of at least one approving = .6 + .12 = .72
Final Answer:
GMAT assassins aren't born, they're made,
Rich