Astudent earned a grade of 80% on a math test that had 20 problems.how many problems in this test did he student answer correctly (round to the nearest whole number)

The probability of drawing a blue ball from the first urn is 6/(4 + 6) = 6/10 = 3/5.

The probability of drawing a blue ball from the second urn is 2/(2 + 6) = 2/8 = 1/4.

Since we want to find the probability that both balls from each urn are blue, we multiply our answers: 3/5 * 1/4 = 3/20.

The answer is the fraction 3/20.