Subject: General Aptitude · Chapter: Area · Exam: · Marks: · Difficulty:
A rectangular grassy plot 110 m by 65 m has a gravel path 2.5 m wide all round it on the inside. Find the cost of gravelling the path at 80 paise per sq. metre.
Answer
Answer (as printed):
Explanation
Area of the plot = (110 × 65) m2 = 7150 m2. Area of the plot excluding the path = [(110 – 5) × (65 – 5)] m2 = 6300 m2. ∴ Area of the path = (7150 – 6300) m2 = 850 m2. 80 Cost of gravelling the path = ` 850 × = ` 680. 100 692 QUANTITATIVE APTITUDE
Explanation as extracted from the printed page; notation may be imperfect.