Question
PSLE
A bank and a pool are 80 m apart. They are located between David's house and Ethan's house, as shown. The bank is exactly halfway in between the two houses. One day, David and Ethan started cycling from their houses at the same time and they arrived at the pool together. Ethan cycled at 77 m/min while David cycled at a speed 20 m/min faster than Ethan. 
  1. How much further did David cycle than Ethan?
  2. How far is Ethan's house from the pool? Express your answer in m.
3 m
(a)

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(b)

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PSLE
A bank and a pool are 80 m apart. They are located between David's house and Ethan's house, as shown. The bank is exactly halfway in between the two houses. One day, David and Ethan started cycling from their houses at the same time and they arrived at the pool together. Ethan cycled at 77 m/min while David cycled at a speed 20 m/min faster than Ethan. 
  1. How much further did David cycle than Ethan?
  2. How far is Ethan's house from the pool? Express your answer in m.