To calculate: The number of drinks that are sold if the price is set $2.50 per drink. Given information: If the price is set at $1.25 per drink, then 400 drinks are sold.

Question

To calculate: The number of drinks that are sold if the price is set $2.50 per drink.  Given information:  If the price is set at $1.25 per drink, then 400 drinks are sold.

Bentley Leach · Accepted Answer

Formula used: An equation that equates two ratio or rates is called a proportion. Therefore, if b≠0 and d≠0, then the proportion is, ab=cd Calculation: As it is provided that if the price is set at $1.25 per drink, then 400 drinks are sold. Let x represent the number of drinks that are sold if the price is set to $2.50 per drink. Set up a proportion by writing two equivalent ratios: 1.25400=2.5x Multiply by LCD, that is 400x in above equation. 400x⋅1.25400=400x⋅2.5x Solve the above linear equation. 1.25x=2.5⋅400 1.25x=1000 x=10001.25 x=800 Thus, the number of drinks that are sold is 800.

Jeffrey Jordon · Accepted Answer

Answer is given below (on video)

To calculate: The number of drinks that are sold if

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