Subject: General Aptitude · Chapter: Profit and Loss · Exam: 2007 · Marks: · Difficulty:
On a ₹ 10000 payment order, a person has choice between 3 successive discounts of 10\%, 10\% and 30\%, and 3 successive discounts of 40\%, 5\% and 5\%. By choosing the better one he can save (in rupees)
(a)200
(b)255
(c)400
(d)433
Answer
Answer (as printed): B
Explanation
Final price in 1st case = 70\% of 90\% of 90\% of ₹ 10000 $$=₹\left(\frac{70}{100} \times \frac{90}{100} \times \frac{90}{100} \times 10000\right)=₹ 5670 .$$ Final price in 2nd case = 95\% of 95\% of 60\% of ₹ 10000 $$=₹\left(\frac{95}{100} \times \frac{95}{100} \times \frac{60}{100} \times 10000\right)=₹ 5415 .$$ ∴ Money saved by choosing the better offer $$=₹(5670-5415)=₹ 255 .$$
Explanation as extracted from the printed page; notation may be imperfect.