Question
PSLE
Jade hung some identical rings vertically. The thickness of each ring was 1 cm. The figure shows how the rings are connected.
  1. What was the distance from the top of the 1st ring to the bottom of the 4th ring?
  2. The distance from the top of the 1st ring to the bottom of the last ring was 123 cm. How many rings did Jade hang altogether?
3 m
(a)

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(b)

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PSLE
Jade hung some identical rings vertically. The thickness of each ring was 1 cm. The figure shows how the rings are connected.
  1. What was the distance from the top of the 1st ring to the bottom of the 4th ring?
  2. The distance from the top of the 1st ring to the bottom of the last ring was 123 cm. How many rings did Jade hang altogether?