Answered

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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

Sagot :

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

[tex]\frac{10}{1000}kg=0.01\operatorname{kg}[/tex]

Then, we use the following proportion

[tex]\frac{0.01\operatorname{kg}}{x}=\frac{15\min }{180\min }[/tex]

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

[tex]\begin{gathered} x=\frac{180\cdot0.01}{15} \\ x=0.12 \end{gathered}[/tex]

Hence, the total kilograms are 0.12.

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