Question
PSLE
A park and a bank are 170 m apart. They are located between Ken's house and Bobby's house, as shown. The park is exactly halfway in between the two houses. One day, Ken and Bobby started cycling from their houses at the same time and they arrived at the bank together. Bobby cycled at 100 m/min while Ken cycled at a speed 20 m/min faster than Bobby. 
  1. How much further did Ken cycle than Bobby?
  2. How far is Bobby's house from the bank? Express your answer in m.
3 m
(a)

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(b)

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PSLE
A park and a bank are 170 m apart. They are located between Ken's house and Bobby's house, as shown. The park is exactly halfway in between the two houses. One day, Ken and Bobby started cycling from their houses at the same time and they arrived at the bank together. Bobby cycled at 100 m/min while Ken cycled at a speed 20 m/min faster than Bobby. 
  1. How much further did Ken cycle than Bobby?
  2. How far is Bobby's house from the bank? Express your answer in m.