Anna bought soil that contains 12% of water. She wants to plant a flower that needs
18% of water. How much water does she need to pour in 2 kg of soil to plant that
flower?
А
1.26 de
B.
1.36 L
С
1.46 dl
D
1.56 dl
Answers
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 2 kg of soil to plant the flower
Solution:
anna bought soil that contains 12% of water
2 kg of soil
=> Water = (12/100)2 = 0.24 kg
Let say Water poured = W kg or litre
Total Water = 0.24 + W kg
Total Soil = 2 + W kg
18% of water
=> (18/100)(2 + W) = 0.24 + W
=> 36 + 18W = 24 + 100W
=> 12 = 82W
=> W = 12/82
=> W = 0.146 kg or 0.146 litre
or 1.46 dl
1.46 dl water to be added
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