1.

                        If \[\frac{4}{5}\] of an estate is worth \[Rs.16800,\]find the value of \[\frac{3}{7}\] of the estate.

A.  \[Rs.9000\]                 
B.  \[Rs.21000\]   
C.    \[Rs.72000\]   
D.    \[Rs.90000\]
Answer» B.  \[Rs.21000\]   


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