The quantity of water can be calculated using percent conversion.
The quantity of water is 15 lbs which need to add.
Given:
Total quantity is 10 lbs.
The sugar syrup is 25%
Calculate the 25% of 10 lbs.
[tex]10\times \dfrac{25}{100}=2.5 \rm\:lbs[/tex]
Since Nina has to make 10% so,
[tex]\dfrac{2.5}{10}\times 100=25 \:\rm lbs[/tex]
Calculate the quantity of water that need to add.
[tex]25\:{\rm lbs}-10\:{\rm lbs}=15\:{\rm lbs}[/tex]
Thus, the quantity of water is 15 lbs which need to add.
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