Final answer:
To find the number of calories in 231.5 g of cereal x, set up a proportion using the given information of calories per gram. There are approximately 143.3 calories in 231.5 g of cereal x.
Step-by-step explanation:
To find how many calories are in 231.5 g of cereal x, we can use the given information that there are 110 cal per 177.4 g of cereal x.
We can set up a proportion to solve for the unknown calories in 231.5 g:
110 cal / 177.4 g = x cal / 231.5 g
Cross multiplying and solving for x, we get:
x cal = (110 cal × 231.5 g) / 177.4 g = 143.295 cal
Therefore, there are approximately 143.3 calories in 231.5 g of cereal x.