Students from Texas, New York, Washington, Florida, and Utah identified their area of concentration at various universities. The
results are listed in the table. One of these students is selected at random. What is the probability that the student is from the state of Washington under the condition that the student studies history?
There are two bags: a bag with 4 blue marbles and 6 black marbles and another one containing 6 blue marbles and <span>6 black marbles. the probability of getting a blue marble in the first bag is 6/10 or 3/5 while that on the second bag is 6/12 or 1/2. Hence the total probability of getting two marbles is c. 3/10. </span>
Start by multiplying to get rid of parentheses. Then use addition/subtraction to isolate x on one side of the equation. Finally, use division to determine the value of x.