InterviewSolution
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1). Rs. 202). Rs. 263). Rs. 174). Rs. 22 |
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Answer» ⇒ Average = SUM of elements / number of elements Given, The average price of bunch of rings is Rs. 45. Let the number of rings in a bunch be N. ⇒ Total price of N number of rings = 45 × N The GOOD 45% of them is of average price of Rs. 60 and DAMAGED 20% of average price of Rs. 55. ⇒ Number of good rings in bunch = (45/100) × N = 9N/20 ⇒ Total price of good rings = 60 × (9N/20) = 27N ⇒ Number of damaged rings in a bunch = (20/100) × N = N/5 ⇒ Total price of damaged rings = 55 × (N/5) = 11N Total number of remaining rings = = 100 - (45 + 20) = 35% Total number of remaining rings = = (35/100) × N = 7N/20 Total price of remaining rings = = 45N - (27N + 11N) = 7N Total number of remaining rings = 7N/20 Average price of remaining rings = = Total price of remaining rings / number of remaining rings = 7N/ (7N/20) = 20 Average price of remaining rings IS Rs. 20. |
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