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Popular Word Problems >

The penguin population at the zoo has decreased by 10% over the past year. Last year there were 58 penguins. How many penguins are there now?

Solution

T h e p e n gu in p o p u l a t i o n a t t h e zoo ha s d ecre a se d b y 10% o v er t h e p a s t ye a r . L a s t ye a r t h ere w ere 58 p e n gu in s . Ho w man y p e n gu in s a re t h ere n o w ?

Solution

Amount after reduction : 52.2

Solution steps

Translate the problem into an equation:

x = 58 - 0.1 \cdot 58

x = 58 - 0.1 \cdot 58 : x = 52.2

Amount after reduction : 52.2

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