Answers

2016-05-07T00:02:26+05:30
Let the number of soldiers transferred be = x

by unitary method

number of soldiers      ║   days food lasted
-------------------------------------------------------------  
 1000                           ║         20
1000-x                         ║          25
---------------------------------------------------
 by inverse variation  
1000 × 20 = (1000-x) × 25
1000 ×20/ 25 =1000 - x
800 = 1000 -x
x= 1000 - 800
  = 200

∴200 soldiers were transferred to another fort.
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