A finishes work in 12 days b in 15 days and alone with c theu completed the work in 6 days how many days c will take to complete the work
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suppose quantity of work is 60units.
A's efficiency 60/12 =5 units/day
B's efficiency 4 units/day
A+B+C efficiency 60/6 =10units/day.
out of which C's efficiency is 10-5-4=1 unit/day
only C will do in 60/1=60 days..
A's efficiency 60/12 =5 units/day
B's efficiency 4 units/day
A+B+C efficiency 60/6 =10units/day.
out of which C's efficiency is 10-5-4=1 unit/day
only C will do in 60/1=60 days..
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