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3 years ago

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Sue planted 4 times as many apple seeds as she planted orange seeds. 15 percent of the apple seeds grew into trees, and 10 perce

nt of the orange seeds grew into trees. If a total of 420 apple trees and orange trees grew from the seeds, how many orange seeds did Sue plant?

1 answer:

tatiyna3 years ago

7 0

Answer: 600

Step-by-step explanation:

Given : Sue planted 4 times as many apple seeds as she planted orange seeds. 15 percent of the apple seeds grew into trees, and 10 percent of the orange seeds grew into trees

Let x be the number of apply seeds and y be the number of orange seeds , the we have the following equations:-

$x=4y$ (1)

$0.15x+0.10y=420$ (2)

Put x= 4y in (2), we get

$0.15(4y)+0.10y=420$

$0.60y+0.10y=420$

$0.70y=420$

Divide both sides by 0.70.

$y=600$

Hence, Sue planted 600 orange seeds.

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Morgarella [4.7K]

Answer:

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Step-by-step explanation:

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Distribute:

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Multiply across:

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Add the exponents:

$=-\frac{2}{x^\frac{3}{2}}$

And we're done!

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