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Grandpa Ernie is shrinking! Over the past 444 years, his height decreased by a total of 2.4 \text{ cm}2.4 cm2, point, 4, start text, space, c, m, end text. It decreased by the same amount each year. What was the change in Grandpa Ernie's height each year?

1 Answer

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Given:

Over the past 4 years, Grandpa Ernie's height decreased by a total of 2.4 cm.

It decreased by the same amount each year.

To find:

The change in Grandpa Ernie's height each year.

Solution:

Total change in Grandpa Ernie's height in past 4 years = -2.4 cm

Here, negative sign represents the decrease in height.

It decreased by the same amount each year.

So, change in each year is


\text{Change each year}=\frac{\text{Total change}}{\text{Number of years}}


\text{Change each year}=(-2.4)/(4)


\text{Change each year}=-0.6

Therefore, the change in Grandpa Ernie's height each year is -0.6 cm. It means, the Grandpa Ernie's height decreased by 0.6 cm each year.

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