6 b, C1 3 C1 for stating variables B Let the base length be then the C1 C1 for stating triangle formula height will be 3b. Area of triangle = × base × height B1 B1 for correct expression b = × × 3b b2 = A Where = 6 b2 = 6 b2 = = 4 b = 2 M1 M1 for equating 6 with found expression so height is 3 × 2 which is 6 cm. A1 b A1 for = 2 A1 A1 for 6 cm 6 7 Boys get: C1 3 C1 for explanation of 4 red B one red egg each from each of 4 girls C1 C1 for explanation of 2 green = 4 red one green egg from each other = 2 green Girls get: one blue egg from each of the 2 boys = 8 blue C1 C1 for explanation of 8 blue one yellow egg from each other = 3 yellow eggs each C1 C1 for explanation of 12 yellow = 12 yellow altogether. C1 C1 for complete clear solution 5 8 a Abi B1 3 B1 cao B b Abi stopped B1 B1 cao c 12 minutes B1 B1 cao d Bryn B1 B1 cao By 1.8 km B1 B1 cao e 4.5 km B1 B1 cao f Another suitable question C1 C1 for suitable question using a linear function C1 C1 for a suitable graph 8
6 Let the base length be b, then the height will be 3b. Area of triangle = × base × height = × b × 3b = b2 Where A = 6 b2 = 6 b2 = = 4 b = 2 so height is 3 × 2 which is 6 cm. C1 C1 B1 M1 A1 A1 3 C1 for stating variables C1 for stating triangle formula B1 for correct expression M1 for equating 6 with found expression A1 for b = 2 A1 for 6 cm B 6 7 Boys get: one red egg each from each of 4 girls = 4 red one green egg from each other = 2 green Girls get: one blue egg from each of the 2 boys = 8 blue one yellow egg from each other = 3 yellow eggs each = 12 yellow altogether. C1 C1 C1 C1 C1 3 C1 for explanation of 4 red C1 for explanation of 2 green C1 for explanation of 8 blue C1 for explanation of 12 yellow C1 for complete clear solution B 5 8 a b c d e f Abi Abi stopped 12 minutes Bryn By 1.8 km 4.5 km Another suitable question B1 B1 B1 B1 B1 B1 C1 C1 3 B1 cao B1 cao B1 cao B1 cao B1 cao B1 cao C1 for suitable question using a linear function C1 for a suitable graph B 8