Simplification | Arithmetic aptitude | Discussion Page

If 4/5 of an estate be worth Rs. 16,800, then the value of 3/7 of the estate is :

A) Rs- 9000

B) Rs. 21,000

C) Rs. 72,000

D) Rs. 90,000

Option A

Let the estate worth be x
then, $\frac{4}{5}x=16800$
$x= \frac{16800\times5}{4}$
$x= \frac{16800\times5}{4}=21000$
$\frac{3}{7}\times21000=9000$

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