# The air in the inner tube of the tire of a racing bike has a pressure of 115 psi. How do you convert this pressure to atm?

May 16, 2017

$7.82 a t m$

#### Explanation:

Use the relationships between $p s i$ and $a t m$:

$1 a t m = 14.7 p s i$

So, using dimensional analysis,

$115 p s i \left(\frac{1 a t m}{14.7 p s i}\right) = 7.82 a t m$