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Sloan [31]
2 years ago
10

Half of the children in a library group like pets, one fourth don't like pets and seven children do not have any

Mathematics
1 answer:
erik [133]2 years ago
3 0

Answer:

14 children

Step-by-step explanation:

Half the children like pets and a quarter of the children do not, so another quarter does not have preference. Let x = total number of children, and we would have this equation.

0.25x = 7

x = 28


Since we are asked to give the number of children who like pets, 28/2 = 14 is the answer.

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------------------------------------------------------------------------------------
Ratio
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Width : Length
    2    :   5 

Let x be the scale factor

Width : Length
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Form equation and solve x
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Perimeter = 2(Length + Width)
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Find Length and Width
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Length = 5x 
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------------------------------------------------------------------------------------
Answer: Length = 25 cm, Width = 10 cm
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