150 stated as answer A1 9 M1 Guesses a value for weight of jug, Alt 3 subtracts from 250, multiplies answer by 4 and adds to their value Correct calculations A1 M1Dep Guesses a second value for weight of jug nearer to 150 and correctly calculates all values 150 A1 Q Answer Mark Comments 10 B1 5 or 5 y y ≤ ≥ Any order. Penalise first use of > or < only. Penalise first use of >= or => or =< or <= only. Accept 2 < 5 or 2 5 y y ≤ ≤ ≤ x 2 or 2 x B1 Accept 2 x < 5 or 2 x 5 ≥ ≤ ≤ ≤ ≤ B1 or y x x y ≥ ≤ oe Sc1 y = 5 and x = 2 and y = x or Sc1 5 2 y and x and y x ≥ ≤ ≤ 11 3 + 4 + 5 (= 12) B1 3 and 4 must be used
150 stated as answer A1 9 Alt 3 Guesses a value for weight of jug, subtracts from 250, multiplies answer by 4 and adds to their value M1 Correct calculations A1 Guesses a second value for weight of jug nearer to 150 and correctly calculates all values M1Dep 150 A1 Q Answer Mark Comments 10 y ≤ 5 or 5 ≥ y B1 Any order. Penalise first use of > or < only. Penalise first use of >= or => or =< or <= only. Accept 2 < y ≤ 5 or 2 ≤ y ≤ 5 x ≥ 2 or 2 ≤ x B1 Accept 2 ≤ x < 5 or 2 ≤ x ≤ 5 y ≥ x or x ≤ y B1 oe Sc1 y = 5 and x = 2 and y = x or Sc1 y ≥ 5 and x ≤ 2 and y ≤ x 11 3 + 4 + 5 (= 12) B1 3 and 4 must be used