SSC GD Constable previous year question
Group A has 81 members, Group B has 29 members, and Group C has 70 members. All the members of these groups went to a restaurant. The average amount spent by each member of Group A, Group B and Group C are ₹467, ₹117, and ₹378 respectively. Find the overall average amount (in ₹) spent per member.
Asked in SSC GD Constable 2025: 10 Feb 2025 Shift 1 (Morning) · Quantitative Aptitude
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Correct answer: (B) 376
Total expenditure = 81×467 + 29×117 + 70×378 = 37827+3393+26460 = 67680; total members = 180; average = 67680/180 = 376.
हिंदी में प्रश्न
समूह A में 81 सदस्य, समूह B में 29 सदस्य और समूह C में 70 सदस्य हैं। इन समूहों के सभी सदस्य एक रेस्तरां में गए। समूह A, समूह B और समूह C के प्रत्येक सदस्य पर खर्च की गई औसत राशि क्रमशः ₹467, ₹117 और ₹378 है। प्रति सदस्य खर्च की गई कुल औसत राशि (₹ में) ज्ञात कीजिए।
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सही उत्तर: (B) 376
कुल व्यय = 81×467 + 29×117 + 70×378 = 67680; कुल सदस्य = 180; औसत = 67680/180 = 376.
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