Answers

2014-01-17T22:23:19+05:30
The answer is 20

   1=0.25x+0.3x-0.5
   1=0.55x-0.5x
   1=0.05x
   1
  0.05=x
x=20
0
2014-01-17T22:23:51+05:30
0.5x-0.3x=0.25x-1
0.2x=0.25x-1
0.20x-0.25x= -1
0.05x=1
x=1/0.05
x=100/5
x=20
0