Question

1440 men had sufficient food for 32 days in a camp.How many men may leave the camp so that the same food is sufficient for 40 days when the ration is increase by 1×1/2(one and a half) times? [Hint: The first element(food) is 1 and the 2nd element(food) is 3/2 ].
Note:This question should be solved by FINANCIAL ARITHMETIC.

Answer 1

Food available is good for
     = 1440 men * 32 days * 1 food ratio unit 
     = 1440 * 32 man-days

Now ratio will be increased for less number of persons.
same food is good for  N men * 40 days * 1.50 food ration 
     = 60 N man days

So  60 N = 1440 * 32
        N = 768

So number of persons who may leave the camp
  = 1440 - 768 = 672

Answer 2

Answer:

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