David is planning to travel alone by motorcycle from Singapore to China. The total distance to be travelled is 4900 km. In the first week, he can travel 1000 km.
a) How many weeks does it take for David to reach his destination, if he reduces the distance travelled by 100 km every week due to fatigue?
b) What is the distance he travels on the last leg of his journey?
1 answer
1000 + 900 + 800 + 700 + 600 + 500 + 400 = 4900
1 answer