# Aptitude-hindi - Aptitude-Time And Works

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A and B working separately can do a piece of work in 9 and 12 days respectively. If they work for a days alternatively. A beginning, in how many days the work will be complete?

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• आपका जवाब गलत है

(A and B)\\\'s 2 days =1/9+1/12=736\\nmultiply by 5 i.e 10 day\\\'s work =35/36\\nremaining work=36\\non 11th day it is A\\\'s working, A will do remaining work in 9*1/36, i,e 1/4 days \\nor the work is complete in 41/4

A and B can complete a piece of work in 12 days while B and C in 15 days. A did the work for 3 days, B for 8 days and C for 10 days to complete the work. in how many days C alone can complete the work?

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• b
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• आपका जवाब गलत है

3/12+5/15+5/x=1\n5/x=5/12\nx=12

A and B can complete a piece of work in 80 and 120 days respectively. They together start the the work but A left after 20 days. after another 12 days C joined B and now they complete the work in 28 more days. C can complete the work alone in?

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• b
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• आपका जवाब गलत है

fraction of work did by A+fraction of work did by B +fraction of work did by C=1\\n=120/80+60/120+28/x=1\\n= x=28*4=112 days

A supplies 20 men who work for 8 hrs a day for 6 days. b supplies 15 men working at 9 hours a day for 7 days and C a supplies 10 men working 6 hours days to do a days for 8 certain lob. if Rs 636 is paid for all the labour, what is C\'s share ?

• • • • a
• b
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• आपका जवाब गलत है

So, Rs 636 has to divided among A,B,C in the ratio\n(20*8*6):(15*9*7)(10*6*8)=64:63:32\n c\'s share =32/159*636=Rs. 128

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