Question

QUESTION 1 1 POINT
A new energy drink advertises 125 calories for 7 oz. How many calories are in 21 oz of the drink?
Provide your answer below:

Answer 1

375  calories are in 21 oz of the drink

Given that a new energy drink advertises 125 calories for 7 oz and  asked  how many calories are in 21 oz of the drink.

To find the calories in 21 oz of the drink, we use Proportions and Cross Multiplying.

Let's assume “x” calories in 21 oz of the drink,

For 125 calories ⇒  7 oz

     “x” calories  ⇒  21 oz

By  Proportions and Cross Multiplying,      

$\frac{a}{b}=\frac{c}{d}$

a × d=b × c

$\frac{125}{x} =\frac{7}{21}$

125 × 21 =x × 7

x=375  calories.

Therefore 21 oz of drink has 375 calories.

Hence, 375  calories are in 21 oz of the drink.

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