Question

A deer grows 170% from birth to age 1. If a deer weighs 68 pounds at age 1, how much did it weigh at birth?

Answer 1

Let's define

x: deer weight at birth

y: deer weight at age 1

If a deer grows 170% from birth to age, then

`x\cdot(170)/(100)=y`

If a deer weighs 68 pounds at age 1, therefore y = 68. Solving for x,

`\begin{gathered} x\cdot(170)/(100)=68 \\ x=68\cdot(100)/(170) \\ x=40 \end{gathered}`

It weighed 40 pounds at birth