An electrical company decides to replace the lightbulbs and all the nonworking street lights on two specific streets. The company learns that 2/3 of the lights, do not work on the first street 1/6 of the lights do not work on the second street. What is the total fractional proportion of the nonworking lights on these two streets?

To determine the total proportion of nonworking lights on the two streets, we need to calculate the sum of the fractions representing nonworking lights on each street.

On the first street, 2/3 of the lights do not work, and on the second street, 1/6 of the lights do not work.

To add these fractions, we first need to find a common denominator. In this case, the least common multiple of 3 and 6 is 6. So, we convert the fraction 2/3 to have the same denominator:

2/3 = (2/3) * (2/2) = 4/6

Now, we can add the fractions:

4/6 + 1/6 = 5/6

Therefore, the total fractional proportion of nonworking lights on these two streets is 5/6.