GIVEN : Total number of animals = 338 Total legs count of animals = 1052 CONCEPT : Ratio method ASSUMPTION : Let the number of tigers be t & number of ducks be d. CALCULATION : ∴ t + d = 338 ---- (1) As we know tigers have 4 legs while ducks have 2. ∴ Total leg counts = leg count of tigers + leg count of ducks ∴ 1052 = 4t + 2d ∴ 2t + d = 526 ---- (2) Subtracting equation 1 from equation 2- t = 188 ∴ substituting the value of t in equation 1- ∴ d = 150 ∴ Ratio of number of ducks to tiger = 150 ∶ 188 = 75 ∶ 94 ∴ Answer is 75 ∶ 94