India battles against the West Indies in a must-win match

In ICC Champions Trophy, India battles against the West Indies in a must-win match ( India vs West Indies tonight ) .India approach to the game against the West Indies in a must-win match in Johannesburg on Wednesday in their final group A engagement of the Champions Trophy starts with a prayer on the lips that Pakistan would somehow prevail over Australia by a big margin in the day's first game in Centurion.
If it happens, India would need to up their net run-rate dramatically, besides winning the match, to stand a chance of making the last-four .
India presently has a net run-rate of -1.08 whereas Australia has a massive advantage of their +1.00 in their favour.
Australia won their opening game against the West Indies by 50 runs and India lost theirs by 54 runs. So if India is to go past Australia's net run-rate, they ought to cover the difference of 104 runs between the two teams.

If Australia lose their game by 25 runs, India needs to win theirs against the West Indies by 80 runs to prevail and go through to the semi-finals.
And if Australia bat first and score 250 runs, India need to get their runs inside 40 overs for them to go through.