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 ].

i want detailed answer.. i have seen its solution but could not get that ...
thanks in anticipation

Answer 1

Answer:

Step-by-step explanation:

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