Question
PSLE
Zane threw a ring around the top of a bottle 30 times. One point was scored when the ring fit on the bottle and one point was deducted when the ring bounced off the bottle.

For Zane's first 25 throws, the ring fit on the bottle 20 times.
  1. What was Zane's score from the first 25 throws?
  2. At the end of 30 throws, Zane's scored 17 points. How many successful throws did he make for his last 5 throws?
2 m
(a)

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(b)

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PSLE
Zane threw a ring around the top of a bottle 30 times. One point was scored when the ring fit on the bottle and one point was deducted when the ring bounced off the bottle.

For Zane's first 25 throws, the ring fit on the bottle 20 times.
  1. What was Zane's score from the first 25 throws?
  2. At the end of 30 throws, Zane's scored 17 points. How many successful throws did he make for his last 5 throws?