Nancy and John each had worked 22¾ hours on a job when their foreman told them that they were 65% complete. How many hours are left on this job?

Question

Stich

Mathematics

13 December, 16:44

Nancy and John each had worked 22¾ hours on a job when their foreman told them that they were 65% complete. How many hours are left on this job?

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Answers (1)

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Alena · Answer 1

12¼ hours

Step-by-step explanation:

The complete work will be 100% so the combination of efforts of Nancy and John would require more hours.

Given that the duration of 22¾ represent 65% then using the concept of cross multiplication, we first get the total number of hours required for the whole task.

If 65% represent 22¾ hours then what would 100% represent?

65%=22¾

100%=x

X=100*22¾ / 65=35 hours

Remaining hours will be 35-22¾ = 12¼ hours

Therefore, additional 12¼ hours are needed by Nancy and John