Question

A rectangular lawn $80m\times 60m$ has two roads each $10m$ wide running in the middle of it, one parallel to the length and the other parallel to the breadth. The cost of graveling them at $Rs.30$ per square meter will be?

• A. Rs $38000$
• B. Rs $40000$
• C. Rs. $39000$
• D. Rs. $39500$

Answer 1

The correct option is C Rs. $39000$

Area of road $=80\left(10\right)+60\left(10\right)-10\left(10\right)=1300m^2$
$\therefore$ Cost of gravelling them at $Rs.30$ per square meter $=30\left(1300\right)=Rs.39000$