Aptitude

Topic: Time and Work

A is 50% as efficient as B. C does half the work done by A & B together. If C alone does the work in 40 days, then A,B and C together can do the work in:

A"s one day"s work:B"s one days work = 150:100 = 3:2 Let A"s & B"s one day"s work be 3x and 2x days respectively. Then C"s one day"s work = 5x/2 = > 5x/2 = 1/40 = > x = ((1/40)*(2/5)) = 1/100 A"s one day"s work = 3/100 B"s one day"s work = 1/50 C"s one day"s work = 1/40 So, A,B and C can do the work in 13 1/3 days.

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