Proportional Reasoning-1: Trairāśika & Binairo
Master ratio proportions, solve Aryabhata's historic Rule of Three (Trairāśika), explore non-equal sharing, and conquer Takuzu binary grid logic!
Warmup: Filter Coffee & Ratios
Regular filter coffee mixes 15 mL decoction with 35 mL milk (Ratio 3:7). Compare the batch below!
For a school mid-day meal of 120 students, the cook uses 15 kg rice. On a rainy day, only 80 students attend. How much rice should be cooked?
Rules: (1) Equal | (red) and — (yellow) per row/col (3 each). (2) No more than two identical lines adjacent. Click empty cells to toggle!
Solve any proportion a : b :: c : x and verify cross multiplication (ad = bc)!