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)?

Question

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

Answer 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

Answer 2

3/10