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Janelle’s hair was 16.8 cm at the beginning of the school year. At the end of the year, the length of her hair had increased by 2.5%. How much did her hair grow during the year?

Respuesta :

Answer:

The hair grow at the end of year (17.22 cm - 16.8 cm) = 0.42 cm

Step-by-step explanation:

Given in the question as:

The height of hair of Janelle's at the beginning of school = 16.8 cm

The length of hair increased by 2.5%

Let the length of hair after increment = x

So, x = 16.8 cm + 2.5 % of 16.8 cm

Or, x = 16.8 cm × ( 1 + [tex]\frac{2.5}{100}[/tex])

Or, x = 16.8 cm × ([tex]\frac{102.5}{100}[/tex]

∴  x = 17.22 cm

 Answer

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