A teacher must grade 32 reports. She can grade 4 reports in 90 minutes. How many hours will it take to grade 32 reports?
2 answers:
Answer:
The teacher will take 720 minutes or 12 hours to grade 32 reports.
Step-by-step explanation:
32 reports= x
4 reports= 90 minutes
Cross multiply method
90*32= 4x
2880= 4x
x= 720
The teacher will take 720 minutes or 12 hours to grade 32 reports.
Hope this helps!
Answer:
12 hours or 720 minutes
Step-by-step explanation:
If 4 reports are graded in 90 minutes, and that there are 60 minutes in an hour. Assuming this is a constant rate, the time taken to grade 32 reports would be:
4 reports / 90 minutes × 60 minutes / hour = 32 reports / x hours.
Where x is the amount of hours taken to grade 32 reports.
→
4 reports × 1 hour /
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