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LenaWriter [7]
2 years ago
5

Jan has 10 reports to file. If each report takes an average of 75 minutes. to file, how long will it take to file 70% of them?

Mathematics
2 answers:
lora16 [44]2 years ago
6 0

10 × 75 = 750 minutes to file 100% of the files. (Approximately 12.5 hours)

\frac{70}{100} = 0.7

70% of these files = 750 × 0.7 = 525 minutes.

Converting 525 minutes into hours, Jan would to take 8.75 hours to file 70% of the files.


Alborosie2 years ago
4 0

Answer:  It will take<u><em> 525 minutes</em></u> to file 70% reports.

Step-by-step explanation:

Average Time taken to file each report , t_1=75\, minutes

Therefore time taken to file 10 reports , t_{10}=10\times t_1

=>t_{10}=10\times 75\, minutes=750\, minutes

To file 70 % reports time taken, T=\frac{70}{100}\times t_{10}=\frac{70}{100}\times 750 \, minutes

=>T = 525 minutes

Thus it will take<u><em> 525 minutes</em></u> to file 70% reports.

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