A, B C and D decide to do a work such that all of them work for the 1st 2 days . A then leaves the work.B, C and D work alternately starting from B. Ratio of time taken by A, B, C and D if they work alone is 4 : 3 : 2 : 5. If the work is completed in 12 days then in how many days A and C can complete the work if they work together ?

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(+ 93) Afghanistan

(+ 355) Albania

(+ 973) Bahrain

(+ 880) Bangladesh

(+ 32) Belgium

(+ 855) Cambodia

(+ 45) Denmark

(+ 20) Egypt

(+ 358) Finland

(+ 33) France

(+ 995) Georgia

(+ 49) Germany

(+ 233) Ghana

(+ 224) Guinea

(+ 348) Hungary

(+ 91) India

(+ 960) Maldives

(+ 230) Mauritius

(+ 52) Mexico

(+ 977) Nepal

(+ 31) Netherlands

(+ 64) New Zealand

(+ 234) Nigeria

(+ 968) Oman

(+ 92) Pakistan

(+ 48) Poland

(+ 351) Portugal

(+ 7) Russia

(+ 966) Saudi Arabia

(+ 27) South Africa

(+ 82) South Korea

(+ 34) Spain

(+ 268) Swaziland

(+ 46) Sweden

(+ 41) Switzerland

(+ 992) Tajikistan

(+ 90) Turkey

(+ 380) Ukraine

(+ 971) United Arab Emirates

(+ 44) United Kingdom

(+ 1) United States

(+ 263) Zimbabwe

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Mobile Number

(+ 93) Afghanistan

(+ 355) Albania

(+ 973) Bahrain

(+ 880) Bangladesh

(+ 32) Belgium

(+ 855) Cambodia

(+ 45) Denmark

(+ 20) Egypt

(+ 358) Finland

(+ 33) France

(+ 995) Georgia

(+ 49) Germany

(+ 233) Ghana

(+ 224) Guinea

(+ 348) Hungary

(+ 91) India

(+ 960) Maldives

(+ 230) Mauritius

(+ 52) Mexico

(+ 977) Nepal

(+ 31) Netherlands

(+ 64) New Zealand

(+ 234) Nigeria

(+ 968) Oman

(+ 92) Pakistan

(+ 48) Poland

(+ 351) Portugal

(+ 7) Russia

(+ 966) Saudi Arabia

(+ 27) South Africa

(+ 82) South Korea

(+ 34) Spain

(+ 268) Swaziland

(+ 46) Sweden

(+ 41) Switzerland

(+ 992) Tajikistan

(+ 90) Turkey

(+ 380) Ukraine

(+ 971) United Arab Emirates

(+ 44) United Kingdom

(+ 1) United States

(+ 263) Zimbabwe

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10 Jun 2020 12:54 PM study24x7

A, B C and D decide to do a work such that all of them work for the 1st 2 days . A then leaves the work.B, C and D work alternately starting from B. Ratio of time taken by A, B, C and D if they work alone is 4 : 3 : 2 : 5. If the work is completed in 12 days then in how many days...

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Dipak Mishra

Ratio of time taken is 4: 3:2:5, hence ratio of efficiencies is 1/4:1/3: 1/2:1/5. or 15: 20 : 30 : 12. Assume their efficiencies to be 15, 20,30 and 12 units respectively. Hence total work done in 12 days = 2*(15+20+30+12) + 3(20+30+12) +20 = 360 units( figure out how). Hence time required by A and C = 360/(15+30) = 8 days.

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Reply 1 11 Jun 2020 09:19 AM

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