Question

The cost of cultivating a square field at the rate of $Rs.135$ per hectare is $Rs.1215$. The cost of putting a fence around it at the rate of $75paise$ per metre would be ...... .

• A. $Rs.360$
• B. $Rs.810$
• C. $Rs.900$
• D. $Rs.1800$

Answer 1

The correct option is C $Rs.900$

rate of cultivating a square field =Rs.135 per hectare,
cost of cultivating a square field=Rs.1215
area of square field=cost of cultivating a square field/rate of cultivating a square field
$A=1215/135$
$A=9hectare$
1 hectare =10000m^2
$Area=a^2$
$90000=a^2$
$a=300$
cost of putting a fence around it at the rate of 75 paise per metre
Total cost=0.75*4*300Rs
C=900Rs
Answer (C) 900RS