days [2] Answer (b) 4 (a) Express 756 as a product of its prime factors. [2] Answer (a) Given that 756k is a perfect cube, state the smallest integer value of (b) k. [1] Answer (b) A bus left its depot at 0450 and arrived at the Ang Mo Kio Bus Interchange at 0504. 5 (a) How many minutes did the journey take? min [1] Answer (a) The distance from the depot to the interchange is 12 km. (b) Calculate the average speed of the bus in kilometres per hour.
Answer (b) days [2] 4 (a) Express 756 as a product of its prime factors. Answer (a) [2] (b) Given that 756k is a perfect cube, state the smallest integer value of k. Answer (b) [1] 5 (a) A bus left its depot at 0450 and arrived at the Ang Mo Kio Bus Interchange at 0504. How many minutes did the journey take? Answer (a) min [1] (b) The distance from the depot to the interchange is 12 km. Calculate the average speed of the bus in kilometres per hour.
4NA_EM_P1_Prelim_2012.docx