A room 5 m × 8 m is to be carpeted leaving a margin of 10 cm from each wall. If the cost of the carpet is ₹… · ABC26GN4361
Subject: General Aptitude · Chapter: Area · Exam: 2007 · Marks: · Difficulty:
A room 5 m × 8 m is to be carpeted leaving a margin of 10 cm from each wall. If the cost of the carpet is ₹ 18 per Sq. metre, the cost of carpeting the room will be
(a)₹ 673.92
(b)₹ 682.46
(c)₹ 691.80
(d)₹ 702.60
Answer
Answer (as printed): A
Explanation
Area of the carpet $=[(5-0.20) \times(8-0.20)] \mathrm{m}^{2}=(4.8 \times$ 7.8) $\mathrm{m}^{2}=37.44 \mathrm{m}^{2}$. $$\text { ∴ Cost of carpeting }=₹(37.44 \times 18)=₹ 673.92 \text {. }$$