Answer :

Solution

For this case we can find the rate of painting on this way:

14 portratits/ 28 hours= 1/2 portraits /hour

And then we can find the time required with this operation:

[tex]\frac{2\text{portraits}}{0.5\text{ por/hour}}=4hours[/tex]

Then the final answer for this case would be 4 hours

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