Its a simple unitary method problem…
6 men will do the work in 12 days
1 man will do in 6*12 = 72 days
So, 5 men will do it in 72/5 = 14.4 days
There are two types of relation
Direct relation - If one quantity increases then the other also increases and if one quantity decreases then the other also decreases.Example- If 3 pencils cost Rs 7, then what will be the cost of 5 pencils ?3 pencils cost Rs 71 pencil will cost Rs 7/3 (First divide)5 pencils will cost Rs (7/3)*5 = Rs 11.66 (Then Multiply)Inverse relation : If one quantity increases then the other decreases and if one quantity decreases then the other increases.Example - This question itself is the example of inverse relation. Here first we did multiplication and then division.I hope it clears the image….