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A Scientist uses 10 grams of carbon evrey 15 mins during an experiment. If the experiment lasted 3 hours, how many total kilograms of carbon did they use

User KEYSAN
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1 Answer

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We know that

• A scientist uses 10 grams every 15 minutes.

To find the kilograms used in 3 hours, first, we transform 10 grams into kilograms


(10)/(1000)kg=0.01\operatorname{kg}

Then, we use the following proportion


\frac{0.01\operatorname{kg}}{x}=(15\min )/(180\min )

Because 3 hours is equivalent to 180 minutes. Let's solve for x


\begin{gathered} x=(180\cdot0.01)/(15) \\ x=0.12 \end{gathered}

Hence, the total kilograms are 0.12.

User Umar Sid
by
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