Question

The ideal air to fuel ratio for an engine is 14.4:1. If a vehicle burns 7 lb of fuel, how many pounds of air should it draw to achieve the ideal ratio?

Answer 1

`100.8\:lbs\:of\:air`

1) Let's begin solving this problem, considering the ratio we were told:

`(air)/(fuel)=(14.4)/(1)`

Now, let's set a pair of ratios based on the question at the end of the text.

`\begin{gathered} (14.4)/(1)=(x)/(7) \\ x=7*14.4 \\ x=100.8 \end{gathered}`

Note that we cross multiplied that. So we can tell that we need:

`100.8\:lbs\:of\:air.`

In order to achieve the ideal ratio.