A आणि B मिळून एक विशिष्ट कार्य 20 दिवसांत पूर्ण करू शकतात तर B आणि C मिळून ते कार्य 24 दिवसांत पूर्ण करू शकतात. जर A हा C पेक्षा दुप्पट चांगला कार्य करत असेल, तर B एकटा त्याच कार्याच्या 40% कार्य किती वेळात करेल?

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SSC CGL 2020 Tier-I Official Paper 10 (Held On : 18 Aug 2021 Shift 1)
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  1. 12 दिवस
  2. 10 दिवस
  3. 18 दिवस
  4. 15 days

Answer (Detailed Solution Below)

Option 1 : 12 दिवस
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PYST 1: SSC CGL - General Awareness (Held On : 20 April 2022 Shift 2)
25 Qs. 50 Marks 10 Mins

Detailed Solution

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दिलेल्याप्रमाणे:

A = 2C

A + B हे 20 दिवसांत पूर्ण करतात

B + C हे 24 दिवसांत पूर्ण करतात

वापरलेली संकल्पना:

एकूण कार्य = कामगारांना लागलेल्या वेळेचा लसावि

गणना:

20 आणि 24 चा लसावि 120 आहे

तर, A आणि B ची कार्यक्षमता = 120/20 = 6 आणि B आणि C ची कार्यक्षमता = 120/24 = 5

आता 2C + B = 6 आणि B + C = 5

तर, C = 1

B = 4

40% कार्य = 120 × 2/5 = 48 एकक

तर, B ला 48/4 = 12 दिवस लागतील

∴ B एकटा समान कार्याचा 40% भाग 12 दिवसात पूर्ण करतो

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