# What is an equation that you can use to find the number of Calories in any number of grams of trail mix?

##### 1 Answer

Jun 2, 2018

Well, it depends on the label...

Define

- the total number of calories,
#"Cal"# , as#q_(Cal)# - the number of calories per container as
#barq_(Cal)# in terms of#"Cal/container"# - the number of servings as
#N_(Serv)# - the serving size in terms of
#"g/serving"# as#m_(Serv)#

Then by simple unit conversion,

#8 cancel"servings" xx "43 g"/cancel"1 serving" = "344 g/container"#

And thus,

#color(blue)(q_(Cal)) = "190 Cal"/cancel"container" xx cancel"1 container"/"344 g"#

#=# #color(blue)("0.522 Cal/g")#

In general,

#barul|stackrel(" ")(" "q_(Cal) = barq_(Cal)/(N_(Serv)m_(Serv))" ")|#