Question

What is 19.2×108 minutes in hours?

Answer 1

The answer is:  [C]:  " 3.200 * 10⁷  h " .
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Explanation:
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19.2 * 10⁸  min * (1 hr / 60 min) ;


=  (19.2 * 10⁸)
_______________ ;  
         60

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Divide EACH SIDE of the fraction by "10" ; to get:
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(19.2 * 10⁷)
_______________ ;  
         6

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⇒  (19.2) ÷ (6) = 3.2 ;  so rewrite as:
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3.2 *  10⁷ ; which corresponds with:

Answer choice:  [C]:  " 3.200 * 10⁷  h " .
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Answer 2

Answer:

$19.2\times 10^8\ minutes$ in hour is:

$3.200 \times 10^7\ h$

Step-by-step explanation:

1 hour=60 minutes

⇒ 1 minute=$\dfrac{1}{60}$ hour

⇒ $19.2\times 10^8\ minutes=\dfrac{1}{60}\times 19.2\times 10^8\ hour$

⇒ $19.2\times 10^8\ minutes=3.200 \times 10^7\ hour$

Hence, $19.2\times 10^8\ minutes$ in hour is:

$3.200 \times 10^7\ h$