Question

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?

Answer 1

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.

Answer 2

Answer:  It will take 525 minutes 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 525 minutes to file 70% reports.