Respuesta :
Given :
anna bought soil that contains 12% of water .
she wants to plant a flower that needs 18% of water .
To Find :
how much water does she need to pour in 5 kg of soil to plant the flower
Solution:
anna bought soil that contains 12% of water
5 kg of soil
=> Water = (12/100)2 = 0.6 kg
Let say Water poured = W kg or litre
Total Water = 0.6 + W kg
Total Soil = 5 + W kg
18% of water
=> (18/100)(5 + W) = 0.6 + W
=> 90 + 18W = 60 + 100W
=> 30 = 82W
=> W = 30/82
=> W = 0.366 kg or 0.366 litre
or 3.66 dl
3.66 dl water to be added
anna bought soil that contains 12% of water .
she wants to plant a flower that needs 18% of water .
To Find :
how much water does she need to pour in 5 kg of soil to plant the flower
Solution:
anna bought soil that contains 12% of water
5 kg of soil
=> Water = (12/100)2 = 0.6 kg
Let say Water poured = W kg or litre
Total Water = 0.6 + W kg
Total Soil = 5 + W kg
18% of water
=> (18/100)(5 + W) = 0.6 + W
=> 90 + 18W = 60 + 100W
=> 30 = 82W
=> W = 30/82
=> W = 0.366 kg or 0.366 litre
or 3.66 dl
3.66 dl water to be added
The liters of water they need to add to 5 kg of soil is equal to
3.66 dl water.
We have given,
Anna bought soil that contains 12% of water.
She wants to plant a flower that needs 18% of water.
We have to determine, how much water does she need to pour in 5 kg of soil to plant the flower
Now, anna bought soil that contains 12% of water
5 kg of soil
Water = (12/100)2 = 0.6 kg
Let Water poured = W kg or liter
What is the total water?
The addition of the amount of all water given in the question.
Therefore we get,
Total Water = 0.6 + W kg
Total Soil = 5 + W kg
18% of water
(18/100)(5 + W) = 0.6 + W
90 + 18W = 60 + 100W
30 = 82W
W = 30/82
W = 0.366 kg or 0.366 litre
or 3.66 dl
The liters of water they need to add to 5 kg of
soil is equal to 3.66 dl water.
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