Question

A 5-oz serving of a Bloody Mary contains 14 g of alcohol and 5 g of carbohydrates, and thus 116 Calories. A 2.5-oz serving of a martini contains 22 g of alcohol and a negligible amount of carbohydrates, and thus 156 Calories. An average person burns 600 Calories per hour while exercising on a cross-country ski machine. Determine how long it will take to burn the calories from one serving of (a) a Bloody Mary and (b) a martini on this cross-country ski machine.

Solution

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Part A\textbf{\large Part A}

Δt=116Cal600Calh=0.193h=11.6min\begin{align*} \Delta t&=\dfrac{116\:\text{Cal}}{600\:\dfrac{\text{Cal}}{\text{h}}}\\ &=\boxed{0.193\:\text{h}=11.6\:\text{min}} \end{align*}

Part B\textbf{\large Part B}

Δt=156Cal600Calh=0.26h=15.6min\begin{align*} \Delta t&=\dfrac{156\:\text{Cal}}{600\:\dfrac{\text{Cal}}{\text{h}}}\\ &=\boxed{0.26\:\text{h}=15.6\:\text{min}} \end{align*}

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