2 years ago

Anna earned 45 points on her last test, if there were 60 possible points, what was her percent grade?

Mathematics

1 answer:

lisabon 2012 [21]2 years ago

7 0

Answer:

75%

Step-by-step explanation:

You do 45/60, which is 0.75. 0.75 is 75%.

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Answer:

Time taken by his friend to create the app alone = 48 hours.

Step-by-step explanation:

Hours needed by Jacob to create an app = 24 hours

$\text{One hour work of Jacob = }\frac{1}{24}$

Let hours needed by his friend in creating the app alone = x hours

$\text{So, one hour work of his friend = }\frac{1}{x}$

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$\implies \frac{1}{24}+\frac{1}{x}=\frac{1}{16}\\\\\implies\frac{1}{x}=\frac{1}{16}-\frac{1}{24}\\\\\implies\frac{1}{x}=\frac{24-16}{24\times 16}\\\\\implies \frac{1}{x}=\frac{1}{48}\\\\\bf\implies x = 48$

Hence, Time taken by his friend to create the app alone = 48 hours.

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