The probability is 60% that you will get the same colour twice because one colour has more marbles that the other coloured marble.
Answer:
Anna is 41 years old.
Step-by-step explanation:
Easiest way to do this is by building a equation,
Lest say Anna's age is
.
Then as Peter is 3 years older than Anna Peter's age should be
.
Then the combined ages of the two people is given as 85. So we can write an equation as,



(deducting 3 from both sides of the equation)


As we originally took Anna;s age as 
We can say Anna is 41 years old.
Answer:
Step-by-step explanation:
2/18
3/27
4/36
Algebraic eq:
2(13) + 2(x+1) = 110
x= 41
width= 42