Subject: General Aptitude · Chapter: Area · Exam: 2005 · Marks: · Difficulty:
A coaching institute wants to execute tiling work for one of its teaching halls 60 m long and 40 m wide with a square tile of 0.4 m side. If each tile costs ₹ 5, the total cost of tiles would be
(a)₹ 60000
(b)₹ 65000
(c)₹ 70000
(d)₹ 75000
Answer
Answer (as printed): D
Explanation
Number of tiles required $$=\frac{\text { Area of hall }}{\text { Area of each tile }}=\left(\frac{60 \times 40}{0.4 \times 0.4}\right)=15000 .$$ ∴ Total cost of tiles $=₹(15000 \times 5) ₹ 75000$.
Explanation as extracted from the printed page; notation may be imperfect.