A tire that has traveled 29,000 miles has 1/32 inches of thread lift. How much thread will be left on a tire that has traveled 89,000 miles?

Question

The  amount of thread,t, left on a tire varies inversely as the number of miles, m, the tire has traveled. 

Answer 1

Hi Jaycee...inverse variation looks like this "if y is inversely proportional to x, the equation is y = k/x" where "k" is a constant.

 

1/32 = k/29,000      

k = 906.25

 

So the formula is y = 906.25/x

 

Plugging in 89,000 for x, we get

y = 906.25 / 89,000 

y = .0101825 inches