Question

You plant a tree that is 36 inches tall. After one year, the tree is 43 inches tall. Write an expression which describes the percent of increase in the trees height?

Answer 1

`((h_(f)-h_(o)))/(h_(o)) *100`


`((43-36))/(36) *100`


`(7)/(36) *100`


`0.1944*100`

19.44

19.44% increase

Answer 2

36 - 100%
43 - x %

we multiply by cross -> 36 * x = 100 / 43

we should remove '100%' from new value, because we find only increase.. no new value in percent.

x + 100 = (43 * 100)/36

x = 4300/36 - 100
x = 119+ 16/36 -100
x = 19 +4/9