How can we interpret the independent or conditional probability of two events?

Hello!

A conditional probability can always be computed using the formula in the definition. Sometimes it can be computed by discarding part of the sample space. Two events A and B are independent if the probability P(A∩B) of their intersection A ∩ B is equal to the product P(A)·P(B) of their individual probabilities.

Hope this helps.

You can seeone brownie and one cookie cost x and y  penniesso we have 2x+3y=225 and 3x+5y=350or we have 6x+9y= 675 and 6x+10y=700so we have y=700-675= 25 penniesone brownie cost 25 cents and one cookie cost 75 centsis it clear?