It took half an hour for Dan and Quentin to paint three fence panels. They both work at the same
speed.
Dan continues on his own. Work out how long it
will take him to paint two more panels.

2/3 hour or 40 minutes

Step-by-step explanation:

They work at the same speed.

In 1/2 hour, they painted 3 panels.

In 1 hour, they would paint 6 panels.

In 1 hour, Dan would paint 3 panels.

Their individual speed is 3 panels per hour.

2 panels is 2/3 of 3 panels.

It will take 2/3 hour to paint 2 panels.

2/3 hour = 2/3 * 60 minutes = 40 minutes

answer: all the values are within because it has a pattern that repeats from -6 to 4.

good luck!