12 men can complete a work within 9 days. after 3 days they started the work, 6 men joined them to replace 2 men. how many days will they take to complete the remaining work
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total work ,if 1 unit of work for every men = 12×9= 108
work for 3 days 12×3= 36
leaving 2 men and joining 6 men so total men will be 12-2+6= 16men
remaining work will be completed in (108-36)/16= 72/16 = 9/2days = 4 1/2 days.
work for 3 days 12×3= 36
leaving 2 men and joining 6 men so total men will be 12-2+6= 16men
remaining work will be completed in (108-36)/16= 72/16 = 9/2days = 4 1/2 days.
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