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Question
primary 6 | Maths
| Percentage
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P6
Date Posted: 5 years ago
Views: 417
decreased by 30% => 70%
increased by 30% => 130%
70% x 130% = 91%
compared to original area of 100%,
new area of 91% means
decreased by 9%
ans: (1)
...
increased by 30% => 130%
70% x 130% = 91%
compared to original area of 100%,
new area of 91% means
decreased by 9%
ans: (1)
...
See 1 Answer
done
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tip: percentage decrease already signify (-) so there is no need to put a (-) sign in front of 9%
percentage change is given by the formula (new area-old area)/old area x 100%
percentage change is given by the formula (new area-old area)/old area x 100%
Date Posted:
5 years ago
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