algebra

How do I get the write out the problem for : The sample space is orange, purple and white. If P(orange)=2/5 and P(purple)=3/10, what is P(white)?

I have written 2/5.3/10=6/15 2/5

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asked by Nicole
  1. Step 1. Get common denominator (10 in this case)
    2/5 is the same as 4/10.
    orange is now 4/10 and purple is 3/10 and white is x/10.
    2. Find x (xis white)
    3. 10/10 - (3/10 + 4/10)
    4. 10/10 - 7/10 = 3/10

    3/10 is the answer

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    posted by Emily
  2. 3/10

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