Four friends, Oliver, Callum, Aisha and Zainab, each ran a different distance in a Saffron Walden fun run: 5 km, 8 km, 10 km and 12 km, though not necessarily in that order. Callum ran further than Oliver. Aisha ran further than Callum but less far than Zainab.
(a)Put the four friends in order from shortest to longest distance run.(2)
(b)State the exact distance each friend ran, showing your reasoning.(3)
(Total for Question 28 is 5 marks)