120s Classroom → 35s Sub-90 Target27-Q Mathematics 1 Mock
Archetype Sub-90 Dry-Wipe Invariant (Non-Linear Proportionality (y ∝ x^n) & Reverse Percentage Compounding): Never solve for proportionality constant k: write y2/y1 = (x2/x1)^n directly using fractional multipliers (e.g. +20% = 6/5, -25% = 3/4). For reverse percentages, divide by the multiplier.
sub90 ESATARCH-M1-04: Non-Linear Proportionality (y ∝ x^n) & Reverse Percentage CompoundingMathematics 1
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SUB-90 ZONE (<30S)
0.0s30s Sub-9090s ESAT Budget150s Classroom
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Mathematics 1•ARCH-M1-04•Standard 5-Option
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