arithmetic - in a chocolate company 30 men completed twofifth of a piece of work in 28 days how many more men should be employed to finish the rest of the work in 35 more days - skillgun

Solution: Let the total number of men be x. work done = 2/5, remaining work = (1-2/5) = 3/5.
More work, more men (DP)
More days, less men (IP)
work 2/5 : 3/5
} : : 30 : x
days 35 : 28
.'. (2/5 * 35 * x) = 3/5 * 28 * 30
=> x = 36.