Dhanu has a model railway. (a) He has a train that consists of a locomotive and 4 coaches. The mass of the locomotive is 87 g and the mass of each coach is 52 g. (i) Work out the total mass of the train. (ii) Work out the mass of the locomotive as a percentage of the total mass of the train. (b) The train is 61 cm long and travels at a speed of 18 cm/s. It takes 4 seconds for the whole of the train to cross a bridge. Calculate the length of the bridge? c) A new locomotive costs $64. Calculate the cost of the locomotive in rupees when the exchange rate is 1 rupee = $0.0154. Give your answer correct to the nearest 10 rupees.​