PSLE Will threw a ring around the top of a bottle 40 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 Will's first 34 throws, the ring fit on the bottle 28 times.
- What was Will's score from the first 34 throws?
- At the end of 40 throws, Will's scored 25 points. How many successful throws did he make for his last 6 throws?
(a)
Number of misses
= 34 - 28
= 6
Number of points scored = 28
Will's score
= 28 - 6
= 22
(b)
Will's score for the last 6 throws
= 25 - 22
= 3
If Will made 6 successful throws, the score he earned = 6
If Will made 5 successful throws, the score he earned
= 5 - 1
= 4
If Will made
4 successful throws, the score he earned
= 4 - 1
= 3
Since Will's score for the last 6 throws was
3, he made 4 successful throws.
Answer(s): (a) 22; (b) 4