Question

Marian claims that Food A has slightly more than three times the Calories as Food B. Johan claims that Food B has more Calories. Evaluate both claims. How could both be justified?

Answer 1

Explanation:

In order to justify Marian's statement we have to look at the '' Amount per serving calories'' ⇒

In food label A we can see that this value is 160 calories

In food label B we can see that this value is 50 calories

⇒ 160 calories is slightly more than three times 50 calories

Otherwise If we want to justify Johan statement we need to look at the '' serving size '' ⇒

In food label A we can see that the serving size is 1 cup (237 mL)

In food label B we can see that the serving size is $\frac{1}{4}$ cup (56g)

Working with the information of the food label A we can write the following expression :

$\frac{1Cup}{160calories}=\frac{\frac{1}{4}Cup}{x}$  ⇒ Looking at the value of ''$x$'' ⇒

$x=160calories(\frac{1}{4})=40calories$

$x=40calories$

If we look at the same amount of portion volume :

In $\frac{1}{4}$ cup of food A we have 40 calories

In $\frac{1}{4}$ cup of food B we have 50 calories

We could conclude that Food B has more calories.

That's how both claims could both be justified.