A person gives $$\frac{1}{4}$$ of his property to his daughter, $$\frac{1}{2}$$ to his sons and $$\frac{1}{5}$$ for charity. How much has he given away ?
Options:
A . $$\frac{1}{20}$$
B . $$\frac{19}{20}$$
C . $$\frac{1}{10}$$
D . $$\frac{9}{10}$$
Answer: Option B Let the property is 'P' units According to the question, Given part, $$\eqalign{ & = \frac{1}{4}P + \frac{1}{2}P + \frac{1}{5}P \cr & = \frac{{5P + 10P + 4P}}{{20}} \cr & = \frac{{19}}{{20}}P \cr} $$ Part of property given away $$\frac{19}{{20}}$$
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