Your current estimate is slightly off:
Tech Cost 57 (for either tech) and tech points per turn is 8
Appplied Physics
Accumulated points = 25
Complete in (57 - 25) / 8 = 4 turns (with no carryover to next tech)
Industrial Base
Accumulated points = 12 (50% lost on the switch)
Complete in (57 - 12) / 8 = 6 turns (with 3 carryover to next tech)
G.
Tech Cost 57 (for either tech) and tech points per turn is 8
Appplied Physics
Accumulated points = 25
Complete in (57 - 25) / 8 = 4 turns (with no carryover to next tech)
Industrial Base
Accumulated points = 12 (50% lost on the switch)
Complete in (57 - 12) / 8 = 6 turns (with 3 carryover to next tech)
G.
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