2005 Track circuit calculations

[PJW]

As per Indian Practice:

(1) With optimum feed voltage and maximum ballast resistance of the track, its relay voltage:-

(a) When the minimum permissible shunt resistance is connected across, shall not be more than 85% of its drop away value;

(b) Without a shunt across, shall not be more than 250% of its pick up value, and

(2) With normal feed source voltage and minimum permissible ballast resistance of the track, its relay voltage shall not be less than 125% of its pick up value.

Above values are matching with uk practice? Please clarify

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See attachments for an attempt and the feedback on that.