A drawer contains 50 bolts and 150 nuts.half of bolts and half of nuts are rusted.if one is chosen at random,what is the probability of that is rusted or bolt.
Question asked by: mathana18
Asked on: 08 Sep 2009
50 bolts and 150 nuts
25 rusted bolts, 75 rusted nuts
Therefore chance that when pick one it is a bolt is: 50/200 or 1/4
Chance that what you take out is rusted is 100/200 or 1/2
By: knowitall
Average rating for this answer is 2.5 / 5
Rate Answer
Comment or provide your answer to this question
P(rust) = 100/200 = 1/2
p(bolt) = 50/200 = 1/4
p(rust or bolt) = p(rust) + p(bolt) - p(rust and bolt) = 1/2 + 1/4 - 25/200 = 5/8
answer is 5/8
By: don123
Date of comment: Sat, Nov 27th 2010
Comments and other answers:
P(rust) = 100/200 = 1/2
p(bolt) = 50/200 = 1/4
p(rust or bolt) = p(rust) + p(bolt) - p(rust and bolt) = 1/2 + 1/4 - 25/200 = 5/8
answer is 5/8By: don123
Date of comment: Sat, Nov 27th 2010
Ask a New Question
Find out more about Maths
Maths Questions and Answers probability Questions and Answers Next question: Maths sequence
Become a Member! It's Free >>>
Share on Facebook: 
On Twitter:
Tweet this!
Question Keywords
rusted nuts bolts random probability bolt contains
More Questions:Maths
How Can Be Demostrated That Affine Transformations Transform Lines In Lines?
Quantitative Methods
The Rate Of A Function....a Ballis Shot Upwards From The Roof Of A Classroom At A High School.its Height H(t),in Metres,above The Ground After T Seconds Is Given By Equation...h(t)=6+80(t)-5t2
How High Is The Roof Above The Ground?
Number Sequence