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5 votes
Andy painted 3 portraits every 6 minutes. At that rate, how long, in minutes, will it take to paint 4 portraits??

User STiLeTT
by
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2 Answers

5 votes
A: 3 portraits = 6 minutes

B: 1 portrait = 2 minutes
(divide both sides of A by 3)

C: 4 portraits = 8 minutes
(multiply both sides of B by 4)
User Fabian Bigler
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3.6k points
2 votes
It will take Andy 8 minutes to paint 4 portraits. We first need to find out how long it takes him to paint 1 portrait by dividing both sides by 3. That will get us a unit rate of 2 mins per portrait. Then we multiply the number of portraits (4) by 2 which is 8 minutes.
User Steve Wilford
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3.5k points