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Sagot :
A percentage is a way to describe a part of a whole. The number of people who don't have pets is 50 people.
What are Percentages?
A percentage is a way to describe a part of a whole. such as the fraction ¼ can be described as 0.25 which is equal to 25%.
To convert a fraction to a percentage, convert the fraction to decimal form and then multiply by 100 with the '%' symbol.
Given at the Red bridge School, 1/3 of pupils have a pet dog 2/5 have cat and 1/15 have a hamster.
A.) Number of people who don't have pets = 1 - 1/3 - 2/5 - 1/15
= (15-5-6-1)/15
= 3/15
= 1/5
B.) Given there are 25 people at the school. Therefore, the number of people who don't have a pet is,
Number of people who don't have pets = (1/5) × 250 = 50
C.) The percentage increase of pupils at the Bluebell School that has no pets compared to the Red bridge School is,
Percentage increase = (23%-20%)/20% × 100% = 15%
Hence, the number of people who don't have pets is 50 people.
Learn more about Percentages:
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