Question

Samantha measured 40 1/2 inches. Over the next 5 1/2 years, she grew to a height of 57 inches. During the 5 1/2 years, what was the average yearly change in Samantha's height?

Answer 1

Answer:3 in. per yr

Explanation:

Present height of Samantha is
`40(1)/(2)=(81)/(2)`

After next
`5(1)/(2) years i.e. (11)/(2) years`

she grew to
`57\ inches`

Increase in her height
`=57-(81)/(2)=16.5\ inches`

Increase in height per year is
`=(16.5)/(5.5)=3\ in.\ per\ year`