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Sagot :
It will take 40 minutes for her to plant all 70 flowers that she has. By using proportions, we can find this value.
How to calculate a word problem using proportions?
To calculate a word problem using proportions is as follows:
Consider the details of the word problem in proportions as
a : b = c : d
Here, a: b is the ratio of an event, and c : d is the ratio of another event.
Then, to find the value of c we need to reframe the above proportion into
c = ad/b
This is also said to be a cross formula in terms of word problems.
Calculation:
It is given that, Caroline is planting flowers in her garden.
She plants her first 7 flowers in 4 minutes.
After 12 minutes, she planted 21 different flowers.
Then, she takes x minutes for planting 70 flowers.
(Since the rate of planting is the same)
So, we can write
70 : 21 = x : 12
⇒ x = (70× 12)/21 = 40 minutes
Therefore, Caroline takes 40 minutes for planting all 70 flowers.
Learn more about word problems and proportions here:
https://brainly.com/question/1781657
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