Answer:
1.5 hours
Step-by-step explanation:
Since Joe painted 2/3 section (2 out of 3 sections) of each section, we can break up the sections into parts of "3".
So 8 sections would have total subsections of 8 * 3 = 24 subsections
He painted 2 subsections of each of the 8 sections, so number of subsections painted would be:
8 * 2 = 16 subsections
There are more 24 - 16 = 8 more subsections to paint
If 1 hour means 16 subsections,
1/16 hour = 1 subjection
Thus,
8 remaining subsections would take:
8 * 1/16 = 8/16 = 1/2 hour
So
Initially 1 hour, then 1/2 hour, so total of 1 + 1/2 = 1.5 hours
So, to paint all sections, he took 1.5 hours
