During a childs life from age 1to age 15 his weight in kilog

During a child\'s life from age 1to age 15, his weight, in kilograms, tripled every 4 years. What is the child\'s yearly growth factor for the child\'s weight during this time period? Round answer to 2 decimal places.

4-year growth factor=

Yearly growth factor=

Solution

A = Ao(1+r)^t

4Ao = Ao(1+r)^4

4 = (1 +r)^4

ln(4) = 4*ln(1+r)

ln(1+r) = ln4/4 = 0.3465

1+r = e^(0.3465) = 1.414

r = 0.414

r = 41.4% ( yearly growth factor)

Four year growth factor = (0.414)^4 = 0.029