# 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**

### 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 5/8

By: don123

By: 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:**

What Does The Lowest And Highest Common Multiple Mean?

What Are The Square Numbers

I Am A Factor Of 60 I Am One More Than A Square And Two More Than A Cube

Math Super Stars

Given That Y Is Inversely Proportional To (x-1).
(a)write Down An Expression For Y In Terms Of X And A Constant K.
(b)it Is Given That Y=5 When X=3. Find X When Y=25.