First, we need to convert the mixed numbers into improper fractions.

For 4 1/3 hours, the improper fraction is (4*3 + 1)/3 = 13/3 hours.

For 5 5/12 hours, the improper fraction is (5*12 + 5)/12 = 65/12 hours.

Next, we add these two fractions. But before we can add them, we need to find a common denominator. The least common multiple of 3 and 12 is 12.

So, we convert 13/3 to 52/12.

Now, we can add the two fractions: 52/12 + 65/12 = 117/12 hours.

Finally, we convert this improper fraction back into a mixed number.

117 divided by 12 is 9 with a remainder of 9.

So, Josiah skated for 9 9/12 hours in all.

But we can simplify 9/12 to 3/4.

So, the final answer is 9 3/4 hours.

Question

First, we need to convert the mixed numbers into improper fractions.

For 4 1/3 hours, the improper fraction is (4*3 + 1)/3 = 13/3 hours.

For 5 5/12 hours, the improper fraction is (5*12 + 5)/12 = 65/12 hours.

Next, we add these two fractions. But before we can add them, we need to find a common denominator. The least common multiple of 3 and 12 is 12.

So, we convert 13/3 to 52/12.

Now, we can add the two fractions: 52/12 + 65/12 = 117/12 hours.

Finally, we convert this improper fraction back into a mixed number.

117 divided by 12 is 9 with a remainder of 9.

So, Josiah skated for 9 9/12 hours in all.

But we can simplify 9/12 to 3/4.

So, the final answer is 9 3/4 hours.

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