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The Goofy Gardener had some very strange plants in his greenhouse.  He raises purple pigeon plants that grow 1 foot a day and green monster ferns that grow 2 feet a day.  Today the Goofy Gardener found that he has a purple pigeon plant 1 foot high and a monster fern 7 feet high.  In how many days will the monster fern be three times as high as the pigeon plant?  

 Apr 28, 2021
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In this question, it is probably possible to represent it as an algebraic equation, but I think it would be easier to look at it from a different perspective. Because the Goofy Gardener (weird name, by the way) found that the pigeon plant was 1 foot high and the monster fern was 7 feet high, we can represent the height with a table.

 

Plant Day 1 Day 2 Day 3 Day 4 Day 5
Pigeon Plant 1 2 3 4 5
Monster Fern 7 9 11 13 15

 

 

We can stop at day 5, because on this day, the monster fern is three times as big as the pigeon plant. So, you have your answer:

 

The monster fern will be three times as big as the pigeon plant in 5 days.

 Apr 28, 2021

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